Buckling Analysis of Porous Orthotropic Laminated Plates Within Higher-Order Shear Deformation Theory

Abstract

This study investigates the buckling behavior of porous orthotropic laminated plates using high-order shear deformation theory. The plate is under uniaxial and biaxial compressive loadings. Three different porosity distributions defined by specific functions throughout the plate thickness are considered. The stability equations are derived by the virtual work principle, and the critical buckling load relation is obtained by applying the Galerkin method to the partial differential equations obtained. The results obtained with the derived critical buckling load expression are verified by comparing with the appropriate results in the literature. A parametric analysis is performed to observe the sensitivity of the critical buckling load to shear deformation, porosity, orthotropy, loading factor, and different geometric properties.