Hi all,
I'm trying to figure out something. I have a coupled temperature-displacement analysis with a UMAT & UMATHT subroutine. The UMAT describes the mechanical behaviour, and the UMATHT describes the heat conduction. I want to introduce a boundary condition for the temperature when certain...
Hello,
I'm looking into implementing anistropic plasticity in ABAQUS.
I know the Hill criterion is implemented by default in ABAQUS (see abaqus docs), but I want to implement it in a UMAT, because I have to couple it with other features.
Regarding the STRESS variable that I can use in a UMAT...
Hello,
For my model, I have implemented a UMAT, and at the end of each converged iteration, a parameter is calculated. The UMAT calculations need this parameter for further calculation.
So the values of my UMAT at time increment i depend on the parameter calculated in increment i-1, i.e...
Hello,
I'm currently writing a UMAT. The constitutive equations of the material are based on the gradient in pressure stress (∇p) of the previous increment. I know it's possible to access the pressure stress at the integration points in the UMAT, but with some test simulations (C3D8 elements)...
