change the load case analysis type from linear to non linear

[Anonymous]

How to set the load cases as a non linear analysis case without considering the P-delta effect and the large displacement? since I have tension-only bracing members that I don't want the compression members to carry compression forces? 

the settings that I have applied in the picture, did not change from the analysis type 

[Romanich]

Hi @Anonymous ,

[Anonymous]

Thank you. But I want to apply a seismic analysis and with defining this setting, a convergence errors come. I have just to do a simple seismic analysis with bracings have tension only , and I don't want to apply time history analysis. Is there any ways?

[Romanich]

Hi @Anonymous ,

Please check these topics:

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Reducing-calculation-time/td-p/3875995

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/linear-or-non-linear-tension-only-bracing/td-p/3877573