Hello guys. I have a problem. In my umat (basically single crystall with some changes) there is a dtime variable. It supposed to be increment time. But in my umat it always 0. Even on later increments. Have somebody faced such problem?
Need more information to diagnose. I’ve used many umats before, they require careful usage.
Here is my UMAT and INP file: umat+inpfile — Яндекс Диск. Basically, we are trying to model deep drawing with ears. I modified the single crystal so it could store the orientation matrix (skl) and pass it to the next increment. And when plasticity occurs, the matrix gets modified using the lattice spin tensor.