General Mechanical

General Mechanical

Compliant material not detaching from stiff substrate using cohesive zone model.

    • jhale
      Subscriber

      Hi,

      I am trying to get my model to detach using a cohesive zone model. I followed the ANSYS tutorial, but my model did not detach. I applied a displacement to the top part and the bottom part is fixed. Below are my results and setup.

    • John Doyle
      Ansys Employee
      The strain does not look very large at the interface.
      How does the max normal stress in Y direction compare to the CZM max normal traction?
      Perhaps you need to apply a larger separation load at the top.


    • dsarkar
      Ansys Employee
      It seems the model used shared topology. Match control method(Interface Delamination Application (ansys.com) needs multibody parts without shared edge.
      An alternative to this method is also Contact debonding which is more robust and less sensitive to mesh. Hope this helps!


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