Patent ID: 9690887
Date: 2017-06-27
CPC Classifications: G06F

Claim:
1. A non-transitory computer-readable medium having computer-readable instructions thereon which when executed by a computer cause the computer to execute a method of dimensioning a composite or metallic panel consisting of a homogeneous and isotropic material, the panel having a skin reinforced by a triangular grid of stiffeners, the method comprising: storing material data of the panel, a first set of geometric data of the panel, loads applied on the panel, and boundary conditions applied on the panel in a database; defining a straight section for each stiffener of the triangular grid; calculating a flow in the skin, stresses in the skin, stresses in the stiffeners based on the first set of geometric data of the panel, the loads applied on the panel, and the straight sections; calculating a local buckling of the skin based on the first set of geometric data of the panel, the material data of the panel, the boundary conditions and the stresses in the skin, and stresses in the stiffeners, wherein calculating the local buckling includes: calculating a local buckling of the stiffeners based on the first set of geometric data of the panel, the material data of the panel, the boundary conditions, the first coefficient, and the second coefficient; calculating reserve factors based on the local buckling of the skin and the local buckling of the stiffeners; performing structural analysis of the panel based on the calculated reserve factors; and implementing the performed structural analysis for dimensioning the panel.