Techno Press
Techno Press

Steel and Composite Structures   Volume 23, Number 3, February28 2017, pages 251-261
DOI: http://dx.doi.org/10.12989/scs.2017.23.3.251
 
Vibration and stability of initially stressed sandwich plates with FGM face sheets in thermal environments
Chun-Sheng Chen, Fwu-Hsing Liu and Wei-Ren Chen

 
Abstract     [Full Text]
    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.
 
Key Words
    thermal effect; sandwich plate; FGM face sheet; volume fraction index; initial stress
 
Address
(1) Chun-Sheng Chen, Fwu-Hsing Liu, Wei-Ren Chen:
Department of Mechanical Engineering, Lunghwa University of Science and Technology, Guishan Shiang, Taoyuan, 33306, Taiwan;
(2) Wei-Ren Chen:
Department of Mechanical Engineering, Chinese Culture University, Taipei 11114, Taiwan.
 

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