Applicability of Approximated Three-Dimensional Theory to Static Stress Analysis for Orthogonal Laminated Plate

Abstract

To analyze the response of FRP laminated plate under low velocity impact, the laminated plate theory is applied frequently. The stresses of laminated plate in this study are analyzed by what we call an approximated three-dimensional (3-D) theory. In this theory, in-plane stresses are obtained from higher-order plate theory and out-plane stresses are derived from 3-D equilibrium equation. The objective of this study is to confirm the applicability of approximated 3-D theory to static stresses for [0°/90°] sym CFRP plate under partial distributed load. The stress distributions along the thickness direction were compared with those of the exact 3-D theory.