I am new to Tochnog and really appreciate the open source modeling chain (gmsh->Tochnog->paraview). So far, I’m only familiar with commercial codes, e.g. Abaqus. I actually deal with metal forming problems, but also impact on soil matters in this regard.
Before I start to dig in Tochnog I wonder if it is possible to model strain rate dependent hardening (von Mises plasticity with Nadai hardenig, on Windows) without additional user routine by making the inital yield stress (in group_materi_plasti_vonmises) strain rate dependent using the time ‘derivative’ of total plastic strain and the ‘dependency_’ command(s)?