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Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › Problem with symmetry in LS-Dyna ACT Workbench › Reply To: Problem with symmetry in LS-Dyna ACT Workbench

November 26, 2024 at 10:05 pm
Armin
Ansys Employee

Hello,

When you use the Symmetry Region, the symmetric boundary condition constrains the movement of nodes on the symmetry plane. For example, if the symmetry plane is along the YZ plane, the displacement in the X-direction will be constrained to zero for nodes on the symmetry plane. I can see in your model that you have penetration with the neighboring body in the lateral direction that is not constrained by the symmetric boundary condition.