B31 VUMAT

[hswwh]

I want to know how to write VUMAT for ABAQUS B31. The current situation is that the stress values are less than the B31 that comes with ABAQUS. The left picture is without VUMAT, and the right picture is with VUMAT

 

[FEA way]

Did you try this VUMAT with other element types ? Which built-in material model do you use for comparison ?

 

[hswwh]

Did you try this VUMAT with other element types ? Which built-in material model do you use for comparison ?

Hello, thank you for your reply! I used linear elastic material and compared it with unit B31. The constitutive relation in VUMAT is updated according to linear Hooke's law. According to the ABAQUS manual and output, only S11 and S12 are defined