Structural Engineering and Mechanics

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Modeling wave propagation in graphene sheets influenced by magnetic field via a refined trigonometric two-variable plate theory

  • Fardshad, R. Ebrahimi (Department of Mechanical Engineering, Faculty of Industrial and Mechanical Engineering, Islamic Azad University) ;
  • Mohammadi, Y. (Department of Mechanical Engineering, Faculty of Industrial and Mechanical Engineering, Islamic Azad University) ;
  • Ebrahimi, F. (Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University)
  • Received : 2018.08.18
  • Accepted : 2019.06.04
  • Published : 2019.11.10
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Abstract

In this paper, the magnetic field influence on the wave propagation characteristics of graphene nanosheets is examined within the frame work of a two-variable plate theory. The small-scale effect is taken into consideration based on the nonlocal strain gradient theory. For more accurate analysis of graphene sheets, the proposed theory contains two scale parameters related to the nonlocal and strain gradient effects. A derivation of the differential equation is conducted, employing extended principle of Hamilton and solved my means of analytical solution. A refined trigonometric two-variable plate theory is employed in Kinematic relations. The scattering relation of wave propagation in solid bodies which captures the relation of wave number and the resultant frequency is also investigated. According to the numerical results, it is revealed that the proposed modeling can provide accurate wave dispersion results of the graphene nanosheets as compared to some cases in the literature. It is shown that the wave dispersion characteristics of graphene sheets are influenced by magnetic field, elastic foundation and nonlocal parameters. Numerical results are presented to serve as benchmarks for future analyses of graphene nanosheets.

Keywords

References

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