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Geomechanics and Engineering
  Volume 22, Number 5, September10 2020 , pages 415-431
DOI: https://doi.org/10.12989/gae.2020.22.5.415
 


A simple quasi-3D HDST for dynamic behavior of advanced composite plates with the effect of variables elastic foundations
Mokhtar Nebab, Soumia Benguediab, Hassen Ait Atmane and Fabrice Bernard

 
Abstract
    In this study, dynamics responses of advanced composite plates resting variable elastic foundations via a quasi-3D theory are developed using an analytical approach. This higher shear deformation theory (HSDT) is included the shear deformation theory and effect stretching that has five unknowns, which is even inferior to normal deformation theories found literature and other theories. The quasi-three-dimensional (quasi-3D) theory accounts for a parabolic distribution of the transverse shear deformation and satisfies the zero traction boundary conditions on the surfaces of the advanced composite plate without needing shear correction factors. The plates assumed to be rest on two-parameter elastic foundations, the Winkler parameter is supposed to be constant but the Pasternak parameter varies along the long side of the plate with three distributions (linear, parabolic and sinusoidal). The material properties of the advanced composite plates gradually vary through the thickness according to two distribution models (power law and Mori-Tanaka). Governing differential equations and associated boundary conditions for dynamics responses of the advanced composite plates are derived using the Hamilton principle and are solved by using an analytical solution of Navier\'s technique. The present results and validations of our modal with literature are presented that permitted to demonstrate the accuracy of the present quasi-3D theory to predict the effect of variables elastic foundation on dynamics responses of advanced composite plates.
 
Key Words
    dynamics responses; advanced composite plates; quasi-3D theory; variables elastic foundations
 
Address
Mokhtar Nebab and Hassen Ait Atmane: 1.) Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Civil Engineering Department, Algeria
2.) Department of Civil Engineering, Faculty of Civil Engineering and Architecture, University Hassiba Benbouali of Chlef, Algeria

Soumia Benguediab: 1.) Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Civil Engineering Department, Algeria
2.) Department of Civil and Hydraulic Engineering, Faculty of Technology, Dr. Tahar Moulay University of Saida,
BP 138 Cité En-Nasr 20000 Saida, Algeria

Fabrice Bernard: NSA Rennes, France
 

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