Problems with Multi-layer shell elements

[Jatkinson]

Hello,

I am having trouble getting even a simple model of multi-layer shell elements to run smoothly in opensees in a pushover analysis. The program will always crash at the end of the analysis, but when I look at my data (using -closeonWrite in recorders to retain data despite crash) it seems that opensees completed the pushover to the specified drift. Does anyone have an idea of why this is happening?

On another note, when modelling a RC shear wall with these elements, would it be appropriate to smear the longitudinal reinforcement into a shell of thickness t calculated such that I_shell = I_reinforcement ? Or maybe A_shell = As? Or is there a suggested better way of transforming the section?

Thanks

Jeremy

[fmk]

crashing is a bug i need to fix. can you send me the script. fmckenna ATTTT berkeley DDDDOTTTT edu

why not just put the steel in as a layer?