Page 1 of 1

MultiaxialCyclicPlasticity with initial analysis

Posted: Tue Oct 29, 2024 1:51 pm
by Lei Lei
Hi everyone,

I'm trying to use the MultiaxialCyclicPlasticity constitutive model for an initial analysis, but it’s not included in the OpenSees documentation for constitutive models. I found the source code for this model on GitHub. By default, the material stage is set to 2 (plastic stage), but I need an elastic stage for the initial analysis.

It seems that the updateParameter function could change the stage, but it looks like a parameter needs to be defined first before calling updateParameter. I tried using parameter 1 element 1 material 1 MaterialStageID to define it, but this didn’t work.

Could anyone advise on how to set up this constitutive model for an initial analysis?

Thanks!
54e2cf2ca25b51df7fc67531284fca1.png
54e2cf2ca25b51df7fc67531284fca1.png (4.78 KiB) Viewed 369 times
14a41c42027d9c18e5604f5d4a7359a.png
14a41c42027d9c18e5604f5d4a7359a.png (7.12 KiB) Viewed 369 times

Re: MultiaxialCyclicPlasticity with initial analysis

Posted: Thu Oct 31, 2024 11:26 am
by STKO Team
Unfortunately that model does not implement the setParameter method that is used by OpenSees to understand if a material supports a given parameter name.