When recording operation using Macro Manager in Abaqus, some operations are showed using commmand “getSequenceFromMask”. It is totally unreadable. So we need to tell Abaqus to record this kind of operations in other manner.
Here is an example of VUMAT using Hashin criteria for composites. Rumors said it was from the company. This is re-posted from nabble.com. I have not test it. And I also found the same VUMAT in the appendix of a PhD thesis (please refer to the foot of this post).
Because of carelessness, I ran into a ‘problem during linking’ error in Abaqus. The mistake was misspelling a dimensional variable name. That caused the variable used had not been declared.