When ever I try to use a surface to surface contact, i.e. 2D shell elements to 2D shell elements, under the option Contact/Target shell face, either I can pick TOP or BOTTOM. Why is that? How is that going to cause trouble if I don't choose it correctly? Why is that important and how can I pick the correct shell faces?

  • $\begingroup$ Anyone on this one, please? $\endgroup$ – Rameez Ul Haq Mar 6 at 13:27
  • $\begingroup$ Is it on Ansys Classic APDL or WorkBench? $\endgroup$ – Öskå Mar 15 at 9:26

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