Mechanical Buckling of Circular Orthotropic Bilayer Nanoplate Embedded in an Elastic Matrix under Radial Compressive Loading

Subject Areas : micro and nano mechanics

M. Ahmadpour ¹ , M.E. Golmakani ² , M.N. Sadraee Far ³

1 - Department of Mechanical Engineering, Mashhad branch, Islamic Azad University, Mashhad, Iran
2 - Department of Mechanical Engineering, Mashhad branch, Islamic Azad University, Mashhad, Iran
3 - Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

Received: 2020-02-29 Accepted : 2020-04-19 Published : 2021-03-01

Keywords: Mechanical buckling, Orthotropic Nanoplate, DQM, Nonlocal Mindlin Theory,

Abstract :

This article investigates the buckling behavior of orthotropic annular/circular bilayer graphene sheet embedded in Winkler–Pasternak elastic medium under mechanical loading. Using the nonlocal elasticity theory, the bilayer graphene sheet is modeled as a nonlocal orthotropic plate which contains small scale effect and van der Waals interaction forces. Differential Quadrature Method (DQM) is employed to solve the governing equations for various combinations of simply supported or clamped boundary conditions. The results show that small scale parameter does not have any effect on critical buckling load of cases without elastic medium in simply supported boundary condition. Also, increase of vdW coefficient leads to increase of critical buckling load smoothly then it has no impact on critical buckling load after a certain value.

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