Hello,
I know that Abaqus uses Mises yield criteria by default, and I have heard that if I want to use Tresca then I need to implement this in a VUMAT subroutine (for Abaqus/Explicit).
I'm sure people have done this before, but I am confused on how to do it, even after checking the Abaqus manual.
Could someone please provide some guidance on how to use the Tresca criterion? Would I also have to specify a material curve in VUMAT, such as Holloman Law?
Thanks!
use the relation between tresca and vonMises.
In Tresca the max. shear stress is compared with shear strength of material where as in vonmises , vonMises stress is compared with tensile/compressive strength of material.
Chitaranjan, thank you for your answer. I mean when the FE solver computes the stress field, how do I use Tresca criterion for that, the Von Mises is used by default. Not after the post processing, since the Von mises criterion was already used to calculate the stress field, so the tresca stresses will be invalid .
Is there any specific reason to use Tresca? It is only slighly more conservative than von Mises, but its failure domain is discontinuous
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