Hello Dears!
could you help me please.
I wrote a small umat subr, but it works doesn't correctly
I have 2 steps
Dens=7800
for Emodulus i use next eq. E=Dens**2.5
at first i define DDSDDE, stess, strain, strain energy denity, and parametr S
if S < some value then Ddens=7800
and then...