Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.

Innovation Space

FREE STUDENT SOFTWARE

Pass Integration Point Number to User-Defined Material Subroutine

- September 28, 2026 at 6:25 pm
  
  mwhitte6
  Subscriber
  
  Hi,
  
  Is there a way to access the current integration point number from the user-defined material subroutine?
  
  I see in appendix R that it is accessible to the user-defined cohesive materials model subroutines. However, I do not see how to access it in the standard user-defined material models.
  
  I need to compute higher order derivatives of the shape functions as part of a regularization scheme at each integration point for my material model.
  
  Thanks!
- October 7, 2026 at 2:02 pm
  
  Pedram Samadian
  Ansys Employee
  
  Hello,
  
  Yes, the integration point number is available within the standard user-defined material interface. It is passed as parameter "ipt" to both urmathn and urmats. If it is not currently included in your local USERMAT parameter list, you can modify the argument list to expose it.
  
  I hope this information helps.
  
  Thanks,
  
  Pedram
- October 9, 2026 at 8:21 pm
  
  mwhitte6
  Subscriber
  
  Hi Pedram,
  
  Yup, I see it there now and have been able to get it working.
  
  I don't know how I missed that when I was trying to get it working myself.
  
  Thanks,
  Michael

Viewing 2 reply threads

You must be logged in to reply to this topic.

[bingo_chatbox]