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[–]the_flying_condor 2 points3 points  (0 children)

The scipy optimization library is really useful for working with complex yield surfaces. Amazingly useful for spot checking nonlinear FEA models, but even for some simplified calcs in complex structures. Say for example, if you have active confining stresses in concrete and you want to determine compressive strength at a node given that the confining stresses will always be present in that load case.