Structural Engineering and Mechanics

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Dynamic response of functionally graded annular/circular plate in contact with bounded fluid under harmonic load

  • Yousefzadeh, Sh. (Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University) ;
  • Jafari, A.A. (Department of Mechanical Engineering, K. N. Toosi University of Technology) ;
  • Mohammadzadeh, A. (Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University) ;
  • Najafi, M. (Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University)
  • Received : 2017.03.19
  • Accepted : 2018.01.04
  • Published : 2018.03.10
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Abstract

In this study, the dynamic response of a functionally graded material (FGM) circular plate in contact with incompressible fluid under the harmonic load is investigated. Analysis of the plate is based on First-order Shear Deformation Plate Theory (FSDT). The governing equation of the oscillatory behavior of the fluid is obtained by solving Laplace equation and satisfying its boundary conditions. A new set of admissible functions, which satisfy both geometrical and natural boundary conditions, are developed for the free vibration analysis of moderately thick circular plate. The Chebyshev-Ritz Method is employed together with this set of admissible functions to determine the vibrational behaviors. The modal superposition approach is used to determine the dynamic response of the plate exposed to harmonic loading. Numerical results of the force vibrations and the effects of the different geometrical parameters on the dynamic response of the plate are investigated. Finally, the results of this research in the limit case are compared and validated with the results of other researches and finite element model (FEM).

Keywords

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