Buckling and Post-Buckling Response of Laminated Composite Plate with Random System Properties.

This article addresses the buckling and post-buckling stochastic analysis of a laminated composite plate having random system properties. The transverse shear effects have been included in the system equation in the framework of higher order shear deformation theory. The analysis uses Green Lagrange nonlinear strain displacement equations to model geometric nonlinearity. Direct iteration approach is used to handle deterministic geometric nonlinearity and perturbation approach is presented to handle the randomness in the system properties. Mean and variance of the random buckling and post-buckling strength have been obtained by employing aC0isoparametric nonlinear finite element model. Comparisons with the published results show the accuracy of the proposed probabilistic procedure. Results covering various features are presented for a laminated composite plate with different boundary conditions. [ABSTRACT FROM AUTHOR]