can Opensees consider warping in thin-walled sections?

[xzha8132]

Hi all/frank,

I am a beginner of Opensees user, I just wonder if Opensees can consider the effect of warping in thin-walled steel sections. I have briefly read through the command language manual and some related theory but it seemed that warping is ignored in Opensees. Can someone tell me if it is true?
Another question is if it does ignore warping, is it difficult to add it in open source code?

Regards
David
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Xi Zhang