Autodesk Robot Structural Analysis

[#1]

During non-linear analysis on a structure with planar rigid supports with released uplift, I get an error displaying "execution problem no 902". What might cause this?

BMan

[#2]

If it is not the case please send us model

[#3 · Accepted solution]

Please mind the limitations of the modal analysis for non-linear models

See e.g. message 4 from http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Uplift/m-p/3320823/

also http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Barre-de-treillis-traction-compression-vs-s%...

[#4]

Thanks! Think I got my answer there. No good idea to combine non linear supports and seismic modal analysis. And since I'm not about to do a time history analysis, I guess that leaves me with the mentioned method of transferring results from the seismic analysis to a separate model with non linear supports.

Thanks a lot!

BMan