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Earthquakes and Structures Volume 14, Number 2, February 2018 , pages 117-128 DOI: https://doi.org/10.12989/eas.2018.14.2.117 |
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On the effect of the micromechanical models on the free vibration of rectangular FGM plate resting on elastic foundation |
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Abdelkader Mahmoudi, Samir Benyoucef, Abdelouahed Tounsi,
Abdelkader Benachour and El Abbas Adda Bedia
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| Abstract | ||
| In this research work, free vibrations of simply supported functionally graded plate resting on a Winkler-Pasternak elastic foundation are investigated by a new shear deformation theory. The influence of alternative micromechanical models on the macroscopic behavior of a functionally graded plate based on shear-deformation plate theories is examined. Several micromechanical models are tested to obtain the effective material properties of a two-phase particle composite as a function of the volume fraction of particles which continuously varies through the thickness of a functionally graded plate. Present theory exactly satisfies stress boundary conditions on the top and the bottom of the plate. The energy functional of the system is obtained using Hamilton\'s principle. The closed form solutions are obtained by using Navier technique, and then fundamental frequencies are found by solving the results of eigenvalue problems. Finally, the numerical results are provided to reveal the effect of explicit micromechanical models on natural fundamental frequencies. | ||
| Key Words | ||
| FG plates; micromechanical models; Winkler-Pasternak elastic foundation; a new shear deformation theory; free vibration | ||
| Address | ||
| Abdelkader Mahmoudi, Samir Benyoucef, Abdelkader Benachour and El Abbas Adda Bedia: Department of Civil Engineering, Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Algeria Abdelouahed Tounsi: Department of Civil Engineering, Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Algeria; Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Eastern Province, Saudi Arabia | ||