Incremental strain zero in UMAT

Hi All,

I have implemented a damage mode for non-linear elastic composite in LS-Dyna. However, I found that the incremental strain in the loading direction is zero in the local (UMAT) coordinate, and has a unique (and increasing) value in the global coordinate. Please can anyone advice on this? THanks

Unfortunately I have not hear or seen that issue. I suspect that there must be some issue with your code.

-Jorgen