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Define Mode II Cohesive zone material in Workbench

- May 15, 2025 at 7:33 am
  
  SULUN SHI
  Subscriber
  
  In the ModelI cohesive zone material settings, under Mode II Dominated Bilinear CZM Law, I can only define the maximum stress and the slip at completion of deboning.
  However, I also want to define the tangential cohesive stiffness. How to define it in the Workbench? Any APDL command?
- May 16, 2025 at 6:13 am
  
  Raman Babu
  Ansys Employee
  
  Please use the commands below.
  RMODIF, CID,3 & RMODIF, CID,11 are used to modify the normal and tangential stiffness through commands of your contact region for debonding.
  you can start with the following command under the contact and change the normal/tangential stiffness. (Mode II debonding is mainly governed by the tangential stiffness. hence, you can start by reducing the tangential stiffness and run the simulation.
  Regards,
  Raman Babu

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