Patent ID: 11961185
Assignee: MARKFORGED, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method comprising:
providing a model of a three-dimensional (3D) part;
slicing the model into multiple layers;
identifying an infill-wall boundary and an exterior-interior boundary of each layer of the model;
identifying a first layer of the multiple layers as a first critical layer;
examining a second layer of the model and a third layer of the model, the second layer of the model above the first layer of the model at least a predetermined minimum number of layers, the third layer adjacent to and above the second layer, the second and third layers examined to determine if a difference in a dimension of the perimeter of the second layer and the third layer is above a predetermined threshold value;
imposing a common two-dimensional reference grid on each critical layer, each two-dimensional reference grid made up of grid squares;
constructing an interior voxel mesh of the model, the interior voxel mesh including a plurality of voxels;
augmenting the interior voxel mesh to construct an augmented mesh;
extending the augmented mesh to construct a protomesh, the protomesh having an exterior surface;
extruding the exterior surface of the protomesh to construct a final mesh;
3D printing the 3D part represented by the model according to the multiple layers of the slicing operation; and
conducting a finite element analysis of the 3D printed part using the final mesh.