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We use GH (Grasshopper) to generate fully attributed and restrained models for FEA packages and then pipe them over real time to visualize (in the FEA pacakage) and run solvers. It allows us to create complex and very large FEA models quickly and iteratively to solve some tricky engineering problems.

There are structural solutions on top of GH like Karamba [0] and interesting physics engines like Kangaroo [1].

[0]: http://www.karamba3d.com/ [1]: http://www.grasshopper3d.com/group/kangaroo