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The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions error

    • etrl
      Subscriber

      Any ideas on how to fix this error "The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions. Please try to Repair Overlapping Contact Regions."


       

    • Aniket
      Ansys Employee

      Have you checked using the following tool by right clicking on connections?


    • etrl
      Subscriber

      Yes I have, but is suppressing these regions a good idea? 

    • Aniket
      Ansys Employee

      No, suppressing all together is not a good idea. They just give you an idea where you have overlapping contacts. You should fix them before proceeding.

    • etrl
      Subscriber

      How can I fix these overlapping contact regions?

    • seeta gunti
      Ansys Employee

      You can create multi body geometry so that contacts are not created at all.


      Regards,


      Seeta

    • etrl
      Subscriber

      I do have a multi-body geometry. They are essentially PCBs stacked on top of one another. But how can I avoid this error ?

    • seeta gunti
      Ansys Employee

      Hello etrl,


      I hope the following youtubes will help you.




      Regards,


      Seeta


       

    • seeta gunti
      Ansys Employee

      Hello etrl,


      I hope the following youtubes will help you.




      Regards,


      Seeta


       

    • seeta gunti
      Ansys Employee

      Contact regions are said to be "overlapping" when the same entity is a member of more than one contact region or when multiple contact regions share the same geometry. Ansys fluent does not support overlapping contact regions. You need find the cyclic contact region and then suppress it.


      the following links explains how to repair  mesh overlapping 


      https://www.sharcnet.ca/Software/Ansys/16.2.3/en-us/help/wb_msh/msh_overlapping_contacts.html


      Regards,


      Seeta

    • MrRed33
      Subscriber

      If you reached to this page, as I did before...



      Contact regions are said to be "overlapping" when the same entity is a member of more than one contact region or when multiple contact regions share the same geometry...



      The other way is to to segment contact faces (because every contact is between two face). you can do that by Boolean operations (imprint faces) in design modeler

    • BillPeng
      Subscriber

      Click on each connection and you will see the incorrect ones which need suppressing.

    • SKB40
      Subscriber
      I tried doing the boolean face imprint. Still it didn't work. Can you please help.n
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