Steel and Composite Structures

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Vibration and stability of initially stressed sandwich plates with FGM face sheets in thermal environments

  • Chen, Chun-Sheng (Department of Mechanical Engineering, Lunghwa University of Science and Technology) ;
  • Liu, Fwu-Hsing (Department of Mechanical Engineering, Lunghwa University of Science and Technology) ;
  • Chen, Wei-Ren (Department of Mechanical Engineering, Lunghwa University of Science and Technology)
  • Received : 2015.01.18
  • Accepted : 2016.12.29
  • Published : 2017.02.28
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Abstract

In this paper, thermal effect on the vibration and stability of initially stressed sandwich plates with functionally graded material (FGM) face sheets is analyzed. Material properties of FGM face sheet are graded continuously in the thickness direction. The variation of FGM properties assumes a simple power law distribution in terms of the volume fractions of the constituents. The governing equations of arbitrarily initially-stressed sandwich plates including the effects of transverse shear deformation and rotary inertia are derived. The initial stress is taken to be a combination of a uniaxial extensional stress and a pure bending stress in the examples. The eigenvalue problems are formed to study the vibration and buckling characteristics of simple supported initially stressed FGM/metal/FGM plates. The effects of volume fraction index, temperature rise, initial stress and layer thickness of metal on the natural frequencies and buckling loads are investigated. The results reveal that the volume fraction index, initial stresses and layer thickness of metal have significant influence on the vibration and stability of sandwich plates with FGM face sheets.

Keywords

References

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