I’m trying to obtain tensile stress in spring members after formfinding. I’ve attached a little example. As far as I understand it can be done calculating strain (reffered to rest length), and multiplying it by Young’s modulus. Is it correct way to do that in Kangaroo2? Or maybe I’m missing something.
I’m asking, because when I exported formfound geometry to FEM software and applied that pre-stress I didn’t get expected results.
I’ve looked through K2Engineering code, and Pretension, Cable and CableGoal objects seem to follow the exact same logic when calculating forces/stresses as I tried to apply (if I got it correctly).
Later I tested some other topologies using sample script I attached above and the results looked good. Maybe I had some problems in my project, because I was enforcing some particular shape using Galapagos. Thanks again!