Smart Structures and Systems

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Nonlinear vibration analysis of piezoelectric plates reinforced with carbon nanotubes using DQM

  • Arani, Ali Ghorbanpour (Faculty of Mechanical Engineering, Institute of Nanoscience & Nanotechnology, University of Kashan) ;
  • Kolahchi, Reza (Department of Mechanical Engineering, Kashan Branch, Islamic Azad University) ;
  • Esmailpour, Masoud (Young Researchers and Elite Club, Damavand Branch, Islamic Azad University)
  • Received : 2016.03.29
  • Accepted : 2016.06.10
  • Published : 2016.10.25
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Abstract

The aim of the paper is to analyze nonlinear transverse vibration of an embedded piezoelectric plate reinforced with single walled carbon nanotubes (SWCNTs). The system in rested in a Pasternak foundation. The micro-electro-mechanical model is employed to calculate mechanical and electrical properties of nanocomposite. Using nonlinear strain-displacement relations and considering charge equation for coupling between electrical and mechanical fields, the motion equations are derived based on energy method and Hamilton's principle. These equations can't be solved analytically due to their nonlinear terms. Hence, differential quadrature method (DQM) is employed to solve the governing differential equations for the case when all four ends are clamped supported and free electrical boundary condition. The influences of the elastic medium, volume fraction and orientation angle of the SWCNTs reinforcement and aspect ratio are shown on frequency of structure. The results indicate that with increasing volume fraction of SWCNTs, the frequency increases. This study might be useful for the design and smart control of nano/micro devices such as MEMS and NEMS.

Keywords

Acknowledgement

Supported by : University of Kashan

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