Finite element analysis for stress concentration and deflection in isotropic, orthotropic and laminated composite plates with central circular hole under transverse static loading

Abstract

The distributions of stresses and deflection in rectangular isotropic, orthotropic and laminated composite plates with central circular hole under transverse static loading have been studied using finite element method. The aim of author is to analyze the effect of D/ A ratio (where D is hole diameter and A is plate width) upon stress concentration factor (SCF) and deflection in isotropic, orthotropic and laminated composite plates under different transverse static loading condition. Analysis has been done for symmetric and anti-symmetric composite laminates. The results are obtained for three different boundary conditions. The variations of SCF and deflection with respect to D/ A ratio are presented in graphical form and discussed. The finite element formulation is carried out in the analysis section of the ANSYS package.