On 08/07/2018 03:31 AM, Mahesh Prasad wrote:
Thank you for the suggestions. I have already looked through the
"Applications" and found that "PRISMS-Plasticity" is working on similar lines
(Crystal Plasticity FEM).
The nature of the problem is : Multi-scale simulations using Crystal
Plasticity FEM.
Over the years we have developed the UMAT subroutine that describes our
material models. So, instead of implementing them from scratch in dealii we
would like to have an interface that communicates between the UMAT and
dealii. So, my question is: Has anyone tried to link the UMAT subroutines
with dealii ? i.e., The UMAT (fortran 90) has to be called at each integration
point. If not, How do I go about linking the fortran code with dealii ?
Mahesh,
since few of us will be familiar with how exactly ABAQUS interfaces with
externally written routines, can you explain what these UMAT functions take as
input, and which information they return?
I suspect that they probably receive the strain as input and return the stress
as output, but it would be good to know for sure. It may also be that it's the
derivative tensor, of course, which may actually be more useful in practice.
Best
WB
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Wolfgang Bangerth email: [email protected]
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