Parametric study of nonlinear static and dynamic response of composite rectangular plates

Abstract

Nonlinear static and dynamic analysis of clamped-in rectangular composite plate under step pressure pulse load excitation has been studied by considering the material damping in the Von Karman relations. The coupled nonlinear partial differential equations are solved by a one-term solutions and applying Galerkin's technique to the deflection equation. Parametric influence of aspect ratio, orthotropic and damping parameters on the nonlinear dynamic response has been predicted for all edges immovably constrained case by applying the ultraspherical polynomial approximation technique to the nonlinear differential equation in time. Composite materials considered are Glass-Epoxy (GFRP), Boron-Epoxy (BFRP) and Graphite-Epoxy (Gr-FRP), which are now extensively used in various engineering applications wherein weight saving is of paramount importance.