Abdo houlbaytou's blog

hi all,

i am working on abaqus and using umat subroutine.

after i wrote a simple example code(isotropic) on fortran language and make a model on abaqus, i tried to run it together. it is worked.

after, i changed the simple code to my own code(anisotropic code) and run it with abaqus. i 

the result  is following:

too many increment made for this increment.

for step 1 converge but not step2 step 3 step4.

I tried to reduce the time increment but not way even the mesh i changed.

the time step i used is dynamic implcit