Sheldon Imaoka
Ansys Employee

Hi Venkat,

What you noted is sufficient for anisotropic plasticity (Hill potential) with kinematic hardening.

I was a little confused by your description, though. If you want to have combined hardening (isotropic + kinematic), you need to use Chaboche model - details are in the documentation.  Regular kinematic hardening model is not combined with isotropic hardening since they are different/mutually exclusive; however, Chaboche is a nonlinear kinematic hardening model that can account for addition with isotropic hardening.

The solver takes care of the back stress and change in yield stress calculations for each integration point.

Regards,
Sheldon