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The goal of this study is to create semiempirical formulations for predicting thermal and shear buckling loads of perforated rectangular isotropic panels for eight combinations of boundary conditions. The finite element method (FEM) was used to develop and evaluate empirical formulations. In this study, the influences of plate aspect ratios, boundary conditions, and perforation sizes on the buckling strength of perforated panels subjected to shear and thermal loads are investigated. The proposed formulas will enable consistent and reliable computation of the buckling loads for perforated rectangular panels without the need for complex calculations. The results of the empirical equations were found to be reasonably consistent with the outcomes of finite element analysis (FE) and findings from the literature. Various perforation patterns are investigated, ranging from a single circular hole up to 441 circular holes distributed across the plate. The results show that plates with a single central cutout have lower shear buckling loads than plates with multiple holes and an equal total cutout area.

Applicable Formulas for Shear and Thermal Buckling of Perforated Rectangular Panels