You are here
UMAT : Gurson-Tvergaard-Needleman model
Wed, 2012-03-07 11:48 - Seagull
I try to program the GTN model in a UMAT with isotropic hardening and anisotropic Hill yield criterion. I just want to know if someone has an example of UMAT dealing with the original GTN model (Von Mises criterion). This example would help me a lot in order to compare my code and perhaps to find my mistakes.
I had seen that there is an existing thread called "sharing Abaqus UMAT and VUMAT subroutines" but I didn't find what I want in the discussion. I just saw that a GTN UMAT will probably not be given for free. I understand that it's precious but perhaps someone could give me a little help.
thanks in advance
»
- Seagull's blog
- Log in or register to post comments
- 7921 reads
Comments
consult
Have you finished your UMAT procedure about GTN?I am also programing the GTN model in a UMAT with the kinematic hardening .
Yes, my efforts have paid
Yes, my efforts have paid and my UMAT finally works... but it was difficult. Many attempts and doubts before the victory.
I wish you the same result with kinematic hardening. I can give you some help if you want (and if I am capable of :-). If you have questions about mechanic or fortran programming, I'll try to answer. I would be interested in introducing kinematic hardening in my UMAT because I study metal sheets undergoing first tensile test and then bending test. So, your experience may be profitable.
regards
Request_UMAT_Code
Hi Premalin,
Could you please send me the sample of UMAT code for the GTN model.I am new for UMAT, It will be greateful to beging my work .
Thanks in advance;
Email id:pandiieindia@gmail.com