I can’t handle with very big deformations in beam elements in CSM calc. Tell me, please - is it relate only with stiffness, or could be another reasons? I’ve tried to increase stiffnes sertain elements, and after a few efforts calculation was done without errors. But deformations was still too big - more then 10 times in comparison with linear analysis. It obviously unadequat result. May be i shoud chek somthing else - not only stiffness?
Thank you in advance!