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Any tips for surface to solid contact in Marc

cameron.plantz1
I'm familiar with Apex but still getting used to Marc. I have midsurfaced and surfaced meshed a part in Apex and will have it contact a solid (similar to a bolt going through a plate). Are there any tips to get more realistic results? I've already seeded the contact area for node to node contact. This will be a nonlinear analysis looking at the failure modes of the interaction.
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    Dear Cameron Plantz,
     
    You can define the shell body as one contact body and the solid body as another contact body. Define a contact interaction with either Touching or Glue contact and then define a contact table and chose appropriate contact interactions between the bodies. This approach is similar to Nasran style of defining contact bodies, contact pair and then contact table. Then the contact table has to be called in a loadcase.
    It is not mandatory to define the contact interaction and contact table, if there are only two bodies which will be in touching contact, then if you define the contact bodies it is sufficient.
    Node to segment and segment to segment contact both will work.
     
    There are many examples in Marc User's guide on contacts. I am attaching one simple contact example for reference.
     
    Regards,
    Kiranraj Shetty
    MSC Tech Support
    Attached Files (1)
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    Thank you Kiranraj! I've looked at examples and it doesn't look like shell to solid and solid to solid are that different. Was wondering if I needed any special settings but I haven't found any so far.

    Cameron Plantz
  • 0
    Dear Cameron Plantz,
     
    The example I created demonstrates shell to solid contact. By default Marc accounts for shell thickness in contact detection. If required you can chose to ignore shell thickness in contact detection ( under jobs > properties > contact control > advanced contact control ).
    There is no additional settings required for shell edge contact as well.
    Make sure the contact tolerance is good enough to cover the gap between the bodies, select the contact table in loadcase as well as jobs > initial contact as required.
    Regards,
    Kiran
     
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