Table of Contents
ISRN Civil Engineering
Volume 2013 (2013), Article ID 562482, 8 pages
http://dx.doi.org/10.1155/2013/562482
Research Article

Poisson’s Theory for Analysis of Bending of Isotropic and Anisotropic Plates

Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012, India

Received 30 May 2013; Accepted 19 June 2013

Academic Editors: M. Garg and D. Huang

Copyright © 2013 K. Vijayakumar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Sixteen-decade-old problem of Poisson-Kirchhoff’s boundary conditions paradox is resolved in the case of isotropic plates through a theory designated as “Poisson’s theory of plates in bending.” It is based on “assuming” zero transverse shear stresses instead of strains. Reactive (statically equivalent) transverse shear stresses are gradients of a function (in place of in-plane displacements as gradients of vertical deflection) so that reactive transverse stresses are independent of material constants in the preliminary solution. Equations governing in-plane displacements are independent of the vertical (transverse) deflection . Coupling of these equations with is the root cause for the boundary conditions paradox. Edge support condition on does not play any role in obtaining in-plane displacements. Normally, solutions to the displacements are obtained from governing equations based on the stationary property of relevant total potential and reactive transverse shear stresses are expressed in terms of these displacements. In the present study, a reverse process in obtaining preliminary solution is adapted in which reactive transverse stresses are determined first and displacements are obtained in terms of these stresses. Equations governing second-order corrections to preliminary solutions of bending of anisotropic plates are derived through application of an iterative method used earlier for the analysis of bending of isotropic plates.