I used CUFSM software (finite strip method) to evaluate some cold formed pieces we made. The results were at least credible, predicting buckling pretty much where we had already seen it in service. It made me wish we could 'afford' the engineering time to evaluate such stuff before building it.
The software was relatively easy to install, configure and use, and didn't crash.
I claim no particular expertise in any related matter.
Mike Halloran
Pembroke Pines, FL, USA