Stability of Laminated Composite Pretwisted Cantilever Panels

Abstract

This article deals with the stability analysis of angle-ply laminated composite twisted panels using the finite element method. Here, a eight-noded isoparametric quadratic shell element is used to develop the finite element procedure. To investigate the vibration and stability behavior of twisted panels, the effect of various geometrical parameters like angle of twist, aspect ratio, lamination parameters, shallowness ratio, etc. are studied. The influence of various parameters on the vibration and stability characteristics of twisted panels have been examined. Numerical results are presented to show the effects of pretwist angles, geometry, and lamination details on the stability characteristics of twisted plates.