Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › General Contact’s tolerance in Modal Analysis › Reply To: General Contact’s tolerance in Modal Analysis
July 25, 2024 at 4:59 pm
igandiko
Ansys Employee
Any contact in modal analysis will be treated as a tied contact if the surfaces are "sufficiently" close. If there is too much gap between the surfaces, you can increase SAST/SBST parameters (for shells) or SLDTHK parameter (for solids).Â
*CONTACT_AUTOMATIC_SINGLE_SURFACE_TIED could be more convenient option since it has "CLOSE" parameter to define "closeness" tolerance.Â
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