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Coupled Systems Mechanics
  Volume 8, Number 3, June 2019, pages 247-257
DOI: http://dx.doi.org/10.12989/csm.2019.8.3.247
 


Nonlocal strain gradient thermal vibration analysis of double-coupled metal foam plate system with uniform and non-uniform porosities
Raad M. Fenjan, Ridha A. Ahmed, Abbas A. Alasadi and Nadhim M. Faleh

 
Abstract     [Full Text]
    Fee vibrational characteristics of porous steel double-coupled nanoplate system in thermo-elastic medium is studied via a refined plate model. Different pore dispersions called uniform, symmetric and asymmetric have been defined. Nonlocal strain gradient theory (NSGT) containing two scale parameters has been adopted to stablish size-dependent modeling of the system. Hamilton\'s principle has been adopted to stablish the governing equations. Obtained results from Galerkin\'s method are verified with those provided in the literature. The effects of nonlocal parameter, strain gradient, foundation parameters, porosity distributions and porosity coefficient on vibration frequencies of metal foam nanoscale plates have been examined.
 
Key Words
    free vibration; refined plate theory; porous nanoplate; nonlocal elasticity; porosities
 
Address
Raad M. Fenjan, Ridha A. Ahmed, Abbas A. Alasadi and Nadhim M. Faleh: Al-Mustansiriah University, Engineering Collage P.O. Box 46049, Bab-Muadum, Baghdad 10001, Iraq
 

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