General Mechanical

General Mechanical

The singularity of interface contact stress

    • zhangl
      Subscriber

      Hello, is there a good way to deal with the singularity of interface contact stress in the finite element simulation to better evaluate the stress situation of the interface region that I am concerned about

    • Sean Harvey
      Ansys Employee

      Hello Zhangi,

      Contact Stress can often be singular for various reasons. 

      Here are some recommendations.

      • Refined mesh with a comparable mesh size between the contact and target
      • Smooth curvature, so contact normals are not very different
      • Use the Nodal project normal from contact detection method in the contact details. This detection method has a more rigorous treatment.  Please see the help location for details. 13.174. CONTA174 - 3D 8-Node Surface-to-Surface Contact (ansys.com)

      Let us know if this helps.

       

      Regards,

      Sean

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