Get nodal coordinates in UMAT subroutine of ls-dyna

- February 18, 2023 at 5:10 am
  
  stringinging000
  Subscriber
  
  I'm trying to define a material with parameters that vary with position through the umat subroutine of ls-dyna, but I don't know how to get the node coordinates in the subroutine.
  The version of ls-dyna is R12
  I appreciate any suggestion
  Thank you for your help.
- February 20, 2023 at 9:24 pm
  
  Ushnish Basu
  Ansys Employee
  
  Look for instances of dm_x in the dyn21*.F files, and see how getreal8ptr is used to assign it, and how it is passed to other subroutines and accessed in there. You can extend the argument list of the umat routines to include this array.
- February 23, 2023 at 5:03 am
  
  stringinging000
  Subscriber
  
  Thanks for responding.