I'm new in this forum and I've a problem that i can't resolve.
I need to model nitinol in Abaqus: I've read the documentation (Search for answer ID
1658 UMAT and VUMAT routines for the elastic-plastic simulation of Nitinol
4699 Abaqus/CAE plug-in utility to calibrate Nitinol material behavior)
and many topic in Internet but I don't understand if I must use a VUMAT subrutine or it is sufficent the tool of user defined material in Abaqus/CAE. I need something simple like an elastoplatic behaviour with hysteresis given by the different states of austenite and martensite.
please help me