Structural Engineering and Mechanics

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Response of dynamic interlaminar stresses in laminated plates under free vibration and thermal load

  • Zhu, S.Q. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University) ;
  • Chen, X. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University) ;
  • Wang, X. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University)
  • Received : 2006.02.23
  • Accepted : 2006.10.11
  • Published : 2007.04.20
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Abstract

The response histories and distribution of dynamic interlaminar stresses in composite laminated plates under free vibration and thermal load is studied based on a thermoelastodynamic differential equations. The stacking sequence of the laminated plates may be arbitrary. The temperature change is considered as a linear function of coordinates in planes of each layer. The dynamic mode of displacements is considered as triangle series. The in-plane stresses are calculated by using geometric equations and generalized Hooke's law. The interlaminar stresses are evaluated by integrating the 3-D equations of equilibrium, and utilizing given boundary conditions and continuity conditions of stresses between layers. The response histories and distribution of interlaminar stress under thermal load are presented for various vibration modes and stacking sequence. The theoretical analyses and results are of certain significance in practical engineering application.

Keywords

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