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Advances in Materials Science and Engineering
Volume 2014, Article ID 602708, 11 pages
http://dx.doi.org/10.1155/2014/602708
Research Article

Free Vibration Analysis of Fiber Metal Laminate Annular Plate by State-Space Based Differential Quadrature Method

1Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran
2Faculty of Mechanical Engineering, Takestan Branch, Islamic Azad University, Takestan, Iran

Received 6 May 2013; Revised 30 September 2013; Accepted 2 October 2013; Published 2 January 2014

Academic Editor: Jianqiao Ye

Copyright © 2014 G. H. Rahimi et al. 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

A three-dimensional elasticity theory by means of a state-space based differential quadrature method is presented for free vibration analysis of fiber metal laminate annular plate. The kinds of composite material and metal layers are considered to be S2-glass and aluminum, respectively. A semianalytical approach which uses state-space in the thickness and differential quadrature in the radial direction is implemented for evaluating the nondimensional natural frequencies of the annular plates. The influences of changes in boundary condition, plate thickness, and lay-up direction on the natural frequencies are studied. A comparison is also made with the numerical results reported by ABAQUS software which shows an excellent agreement.