Steel and Composite Structures

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Nonlinear dynamic characteristic of sandwich graphene platelet reinforced plates with square honeycomb core

  • Mamoon A.A. Al-Jaafari (Al-Mustansiryah University, Engineering Collage) ;
  • Ridha A. Ahmed (Al-Mustansiryah University, Engineering Collage) ;
  • Raad M. Fenjan (Al-Mustansiryah University, Engineering Collage) ;
  • Nadhim M. Faleh (Al-Mustansiryah University, Engineering Collage)
  • Received : 2021.07.14
  • Accepted : 2022.12.12
  • Published : 2023.03.10
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Abstract

Nonlinear forced vibration behaviors of sandwich plates having graphene platelets (GPL) based face sheets have been researched in this article. Possessing low weight together with low stiffness, square honeycomb cores are mostly constructed by aluminum. Herein, the square shaped core has been fortified by two skins of GPL-based type in such a way that the skins have uniform and linearly graded GPL dispersions. The square shaped core has the effective material specification according to the relative density concept. The whole formulation has been represented based upon classical plate theory (CPT) while harmonic balance approach is applied for solving the problem and plotting the amplitude-frequency curves. The forced vibration behaviors of such plates are influenced by square-shaped core and the relative density, skin's height and GPL fortification.

Keywords

Acknowledgement

The authors would like to thank Mustansiriyah university (www.uomustansiriyah.edu.iq) Baghdad-Iraq for its support in the present work.

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