It is now possible to perform a buckling analysis of a 3D model. The Buckling analysis type option is available in the 3D Warp Advanced options dialog when mesh aggregation is not used.
To enable the Buckling analysis type option, select an analysis sequence that includes Warp, then in the Process Settings Wizard, click Next one or more times to access the Warp Settings page. Deselect the Use mesh aggregation and 2nd-order tetrahedral elements option, then click Advanced options to access the 3D Warp Advanced options dialog, and select Buckling from the Warpage analysis type options list.
Thin-walled, injection-molded parts may buckle under in-mold residual stresses. Experience has shown that classical buckling analysis of warpage problems gives a good prediction of the critical buckling load. The classical buckling method works well because there is very little change of shape prior to buckling in injection-molded parts.
Previously, the ability to perform buckling analysis was available for only Midplane analysis technology. Traditional eigensolvers for buckling analysis of large 3D models require too much computer memory and computational time to be of practical use in real-world applications.