Applied Composite Materials

, Volume 17, Issue 2, pp 69–80 | Cite as

Buckling Analysis of Laminated Composite Plates Using Higher Order Semi—Analytical Finite Strip Method

  • Hamid R. Ovesy
  • Sayyed Amir M. Ghannadpour
  • Mohammad H. Sherafat
Article

Abstract

Rectangular plates made of laminated composite material because of the advantageously high strength and stiffness to weight ratio are used frequently as structural component in various branches of engineering, chief of which are aerospace and marine engineering. Design concepts of these plates that lead to the increase in the buckling load can directly lower the structural cost and/or weight. The finite strip method is one of a number of procedures which can be used to solve the buckling problem of plate structures. In the present work the main concern is with the buckling behavior of plates with simply supported ends subjected to uni-axial pure compression loads. The solution is sought by implementing the higher order semi-analytical finite strip method which incorporates additional degrees of freedom for each nodal line by using Reddy’s higher order plate theory. Therefore the current method is more universal in dealing with different plate thicknesses. In addition, in this semi-analytical finite strip method, all the displacements are postulated by the appropriate harmonic shape functions in the longitudinal direction and polynomial interpolation functions in the transverse direction. The solution is based on the concept of principle of minimum potential energy and an eigen-value analysis is subsequently carried out. From the presented results it can be concluded that the higher order semi-analytical finite strip method is very reliable for the preliminary design of composite plates especially in the case of buckling analysis of relatively thick plates.

Keywords

Buckling analysis Higher order plate theory (HOPT) Semi analytical Finite strip method (FSM) Laminated composite plates 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Hamid R. Ovesy
    • 1
  • Sayyed Amir M. Ghannadpour
    • 2
  • Mohammad H. Sherafat
    • 3
  1. 1.Aerospace Engineering Department and Centre of Excellence in Computational Aerospace EngineeringAmirkabir University of TechnologyTehranIran
  2. 2.Space Engineering Department, Faculty of New Technologies and Energy EngineeringShahid Beheshti UniversityTehranIran
  3. 3.Aerospace Engineering Department and Centre of Excellence in Computational Aerospace EngineeringAmirkabir University of TechnologyTehranIran

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