2D beam 3 points flexion validation (plane strain & plane stress, SOFA vs FF) - #38
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th-skam
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Jul 17, 2026
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You forgot the .msh file so I can't test.
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Adds a 2D validation case for 3-point flexion (simply-supported beam under a
midspan point load), comparing SOFA against a FreeFEM reference solution in
both plane strain and plane stress.
Contents
freefem_beam3pt.edp: FreeFEM linear elasticity solve for the 3pt flexionsetup, supporting both plane strain and plane stress.
sofa_beam3pt.py: SOFA scene reproducing the same geometry, BCs, and load.comparaison_script2d_3pt.py: runs both solvers and compares displacementfields (SOFA vs FreeFEM).
params_beam3pt.json: Shared parameters (geometry, material properties, andload). The plane strain / plane stress configuration is controlled here.
beam2d_tri.msh) is unchanged from previous PRs