Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Buckling analysis of micro-plates reinforced with graphene platelets with piezoelectric face-sheets

Authors
Fatemeh Abbaspour 1
Hadi Arvin Boroujeni 2
1 Faculty of Engineering, Shahrekord University
2 Shahrekord University
10.30506/ijmep.2022.127796.1701
Abstract
In this study, buckling analysis of functionally graded micro plates reinforced with graphene platelets integrated with piezoelectric layers, is investigated. Governing equations are derived based on the modified couple stress theory employing the Hamilton’s principle. A uniform temperature change and a constant external electric field along thickness are applied to the micro plate. An external uniform in-plane mechanical load is distributed along the micro plate edges. The Halpin–Tsai micromechanical model is utilized to evaluate the material properties of each composite layer reinforced with graphene platelets in the micro plate. The effects of the material length scale parameter, the external applied voltage, the thickness of the piezoelectric layers, and the weight fraction of the graphene platelets as well as the graphene platelets distribution pattern on the critical buckling temperature change and the critical buckling in-plane load are investigated. The reinforcing effect leads to a reduction in thermal buckling strength and a growth in mechanical load carrying potential.
Keywords
Modified couple stress theory
graphene
thermal buckling
mechanical buckling
piezoelectricity

Subjects

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  • Receive Date 17 May 2020
  • Revise Date 22 June 2020
  • Accept Date 05 April 2022