Implementation of failure criterion in ABAQUS

[M@ster]

Hi Jorgen and all,

I am currently trying to implement a failure criterion using a user-defined subroutine. My question is: Can I implement only the failure criterion using existing material models in ABAQUS (e.g. elastic and plastic)? Or Do I have to implement in my UMAT/VUMAT not only the failure criterion but also the material constitutive models?

Does current ABAQUS/Standard versions (6.9 or 6.10) support element deletion using a UMAT?

Thanks in advance.

Emmanuel

[Jorgen]

At the moment I cannot think of a way to only provide the failure model. That is you will likely have to write a VUMAT and include both the stress-strain and failure calculations.

Note, Abaqus/Standard cannot delete elements.

-Jorgen

[M@ster]

Hi Jorgen,

Thank you for the quick response. Your comment is very helpful.

Emmanuel