MultiaxialCyclicPlasticity with initial analysis

[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 (4.78 KiB) Viewed 367 times

14a41c42027d9c18e5604f5d4a7359a.png (7.12 KiB) Viewed 367 times

[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.