Hi,
I'm simulating the behavior of anisotropic material using a UMAT subroutine. The UMAT works fine when using single element. However, when I use multiple elements (C3D8R), I get convergence problems.
The problem is as follows:
The simulation stops suddenly with error 'Too many...
Hi,
I'm trying to get the stress-strain data of a specific material, by simulating the viscoplastic behaviour using a rate dependent material model (PERZYNA), but the problem is that when using this model for high strain rate (100 [s^-1]), I get approximately the same yield stress !! (see the...