Indian Journal of Science and Technology

Abstract

Elastic instability (buckling) results for a bimodular laminated plate based on a modified higher order plate theory with seven kinematic variables are presented. Buckling coefficients obtained by the present theory are compared with the Mindlin plate theory (first order plate theory) results higher order plate theory results. A detailed parametric study is carried out to investigate the influence of bi-modularity, thickness ratio, aspect ratio and lamination scheme on the critical buckling load response. The present modified higher order plate theory satisfies the stress-free boundary conditions and predicts buckling loads very accurately. Also, the benefit of significant simplification can be observed as compared with the Lo et al. higher order plate theory.
Keywords: Bimodular, Buckling, Composite, Laminates