Hi all!
I try to simulate crack propagation using subroutine UMAT and XFEM, but I can't fix the error
***ERROR: THE PENALTY STIFFNESS HAS TO BE PROVIDED BY USING *SURFACE
BEHAVIOR,PRESSURE-OVERCLOSURE=LINEAR OR *SURFACE BEHAVIOR,AUGMENTED
LAGRANGE WHEN USER MATERIAL IS USED FOR A CRACK PROPAGATION ANALYSIS
WITH XFEM
although I define *Surface behavior in .inp file:
*Surface Interaction, name=CONT
*Surface Behavior, Augmented Lagrange
1., 1., 1.
but the error persisits. The .inp and .dat files attached.
Please help me!
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