fcVM-workbench Finite element collapse analysis based on the von Mises plasticity model for use with FreeCAD 2024.9.5 2024-09-05 HarryvL https://github.com/HarryvL/fcVM-workbench.git https://github.com/HarryvL/fcVM-workbench.git/raw/main/README.md icons/fcFEM.svg fcVMWorkbench ./ numpy numba matplotlib meshio pyvista scikit-sparse scipy FEM FEA