Search
Close this search box.
Notifications
Clear all

Stress Softening in UMAT

3 Posts
3 Users
0 Reactions
413 Views
Posts: 22
Topic starter
(@Anil Karumuri)
Eminent Member
Joined: 13 years ago

Hi all,

I am implementing the constitutive behaviour of CuAlNi shape memory alloy during uniaxial loading using UMAT. My question is that:

Stress decreases during phase transformation in our model but I cant do this in UMAT. When stress is needed to decrease, abaqus job stops and there is no change in the command window. I wonder that is there anything which I can do when stress starts to decrease in UMAT? It can be in input file or subroutine file.

Thank you.

Naz&#305,m Babacan

Topic Tags
2 Replies
Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

You should be able reduce the stress in a UMAT without problems. I do that quite frequently.
I suspect that there is something else going on in your case 🙁

-Jorgen

Topic Tags
2 Replies
Posts: 83
(@zhaiys)
Trusted Member
Joined: 17 years ago

*STATIC, RIKS

... perhpas?

Reply
Share: