User login

You are here

Extended Chaboche viscoplastic model for cyclic loading

These days I've been applying oneself to implement the Chaboche viscoplastic model in ABAQUS user-subroutine for simulating the cyclic loading in single crystals.
The procedure can easily get out. I'm not sure about the problem, the deduction of Jacobian, the convergence? 
Btw, I know there is free subroutine for crystal plasticity by Huang YG. I wonder if the UMAT routine for chaboche model is available, then I can generalize it to fit for my case.
If pity there isn't, guide or example for viscoplastic model can be of great help also.
Thanks a lot

I am doing similar thing with you, coding a UMAT in abaqus for a
elastic-viscoplastic model. I work in a civil engineering field and this model
is overstress viscoplastic  type of model for soil. With experience of
implementing the elastic-viscoplastic model in AFENA, I still feel difficulty in
convergence issues.
Hope we can share some experience in this work.

I have a technical report of implement viscoplastic model for single crystle. let me know if you want


i am a student of civil engineering of Padova, Italy. I'm writing my
thesis about a fatigue cracks in railway bridges. I need to implement a
UMAT subroutine  for a Chaboche elasto-plastic model for cyclic
loadings into my ABAQUS model. Can anyone help me or post me the

 my mail is

thank you very much


Subscribe to Comments for "Extended Chaboche viscoplastic model for cyclic loading"

Recent comments

More comments


Subscribe to Syndicate