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Finite element formulation and vibration of nonlocal refined metal foam beams with symmetric and non-symmetric porosities

  • Al-Maliki, Ammar F.H. (Al-Mustansiriah University) ;
  • Faleh, Nadhim M. (Al-Mustansiriah University) ;
  • Alasadi, Abbas A. (Al-Mustansiriah University)
  • Received : 2019.03.08
  • Accepted : 2019.04.25
  • Published : 2019.06.25
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Abstract

In present article, a size-dependent refined thick beam element has been established based upon nonlocal elasticity theory. Next, it is used to explore vibration response of porous metal foam nanobeams on elastic medium. The established beam element introduces ten degrees of freedom. Different porosity distributions called uniform, symmetric and asymmetric will be employed. Herein, introduced thick beam element contains shear deformations without using correction factors. Convergence and verification studies of obtained results from finite element method are also provided. The impacts of nonlocality factor, foundation factors, shear deformation, slenderness ratio, porosity kinds and porosity factor on vibration frequencies of metal foam nano-sized beams have been explored.

Keywords

References

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