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Square Plate Out-of-Plane Vibration (solid mesh)

Natural frequencies of a solid simply supported plate are determined. Differences between constant stress solid (elform 1), fully integrated S/R solid (elforms 2, -1 and -2) and fully integrated quadratic 8 node element with nodal rotations (elform 3) can be studied. Example 12 from Introductory Manual for LS-DYNA Users by James M. Kennedy.