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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 749607, 14 pages
http://dx.doi.org/10.1155/2015/749607
Research Article

Estimation of Local Delamination Buckling in Orthotropic Composite Plates Using Kirchhoff Plate Finite Elements

Department of Applied Mechanics, Budapest University of Technology and Economics, Müegyetem rkp. 5, Building MM, 1111 Budapest, Hungary

Received 3 May 2015; Accepted 13 July 2015

Academic Editor: Paolo Lonetti

Copyright © 2015 Zoltán Juhász and András Szekrényes. 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

We analyse the buckling process of composite plates with through-the-width delamination and straight crack front applying uniaxial compression. We are focusing on the mixed mode buckling case, where the non-uniform distribution of the in-plane forces controls the occurence of the buckling of the delaminated layers. For the analysis, semi-discrete finite elements will be derived based on the Lèvy-type method. The method of harmonic balance is used for taking into account the force distribution that is generally non uniform in-plane.