Comparison the stresses and deflections of an isotropic and orthotropic rectangular plates with central circular hole under tension load

Ahmed M Abdullah

doi:10.33899/rengj.2012.54162

Abstract

The distributions of stresses and deflection in rectangular isotropic and orthotropic plates with central circular hole under transverse static loading have been studied using finite element method. The object of this present work is to analyze the effect of D/Y ratio (where D is hole diameter and Y is plate width) upon stress distribution and deflection in plates under tension subjected to a static loading. The D/Y ratio is varied from (0.1) to (0.9). The results are obtained for four different boundary conditions. The variations of stresses and deflections with respect to D/Y ratio are presented in graphical form. The finite element formulation is carried out by using the analysis section of the ANSYS package Keywords: Finite Element, Isotropic and orthotropic plates, Boundary conditions.

Highlights

Rectangular isotropic or orthotropic plate with central circular hole under transverse static loading, have found widespread applications in various fields of engineering such as aerospace, marine, automobile and mechanical application
Chaudhuri [4] worked on stress concentration around a part through hole weakening a laminated plate by finite element method
Paul and Rao [6,7] presented a theory for evaluation of stress concentration factor of thick and FRP laminated plate with the help of Lo Christensen-Wu higher order bending theory under transverse loading

Summary

Introduction

Rectangular isotropic or orthotropic plate with central circular hole under transverse static loading, have found widespread applications in various fields of engineering such as aerospace, marine, automobile and mechanical application. Chaudhuri [4] worked on stress concentration around a part through hole weakening a laminated plate by finite element method. Paul and Rao [6,7] presented a theory for evaluation of stress concentration factor of thick and FRP laminated plate with the help of Lo Christensen-Wu higher order bending theory under transverse loading. Pan et al (14) developed a 3D boundary element formulation for the analysis of composite laminates with holes They used a special Green’s function, which satisfies the continuity equation between the lamina, and the free surface on the top and bottom faces to convert the problem to a two-dimensional formulation to avoid discretization in the plate thickness direction

Objectives

Results

Conclusion