International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Analytical Asymptotic Solutions for Rectangular Laminated Composite Plates

  • Lee, Jae-Hun (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Cho, Maeng-Hyo (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Jun-Sik (Department of Intelligent Mechanical Engineering, Kumoh National Institute of Technology)
  • Received : 2011.02.11
  • Accepted : 2011.06.21
  • Published : 2011.06.30
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Abstract

An analytical solution for rectangular laminated composite plates was obtained via a formal asymptotic method. From threedimensional static equilibrium equations, the microscopic one-dimensional and macroscopic two-dimensional equations were systematically derived by scaling of the thickness coordinate with respect to the characteristic length of the plate. The onedimensional through-the-thickness analysis was performed by applying a standard finite element method. The derived twodimensional plate equations, which take the form of recursive equations, were solved under sinusoidal loading with simplysupported boundary conditions. To demonstrate the validity and accuracy of the present method, various types of composite plates were studied, such as cross-ply, anti-symmetric angle-ply and sandwich plates. The results obtained were compared to those of the classical laminated plate theory, the first-order shear deformation theory and the three-dimensional elasticity. In the present analysis, the characteristic length of each composite was dependent upon the layup configurations, which affected the convergence rate of the method. The results shown herein are promising that it can serve as an efficient tool for the analysis and design of laminated composite plates.

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References

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