Hello, all. I am verifying a VUMAT which just contains stiffness matrix for axisymmetric model. The model is constructed in ABAQUS/Explicit and it is an axisymmetric model. The problem is that after a certain increments, the job aborted since the strain increment, strains and stresses came to unrealistic values. The .cae file and the vumat are attched and your help would be greatly appreciated.