Elastic buckling of plates with eccentrically positioned rectangular perforations

The conjugate load/displacement method is used to analyze square plates with perforations, and results are presented for geometries with rectangular holes offset from one or both axes of symmetry. Results are given for uniaxial and shear loading, and simply supported and fully fixed boundaries. Design guidance for the location of perforations and the effect of longitudinal or lateral slots is explained. The potential to increase the elastic critical load for an unperforated plate by the introduction of a small perforation is reported.