Aeroelastic Analysis of Reinforced Curved Panels by Nano-Graphene Plates

Document Type : Dynamics, Vibrations, and Control

Authors

1 Mechanical Engineering Department, Khatamul-Anbiya Air Defense University, Tehran, Iran

2 malek ashtar university

3 Mechanical Engineering Department Shahid Bahonar University of Kerman

Abstract

In this study, the vibration and stability analysis of functionally graded (FG) doubly curved panels reinforced with nano-graphene platelets (NGPLs) embedded by piezoelectric layers under the influence of aeroelastic force are investigated. Multilayer sandwich doubly curved panel makes of porous materials reinforced with nano-graphene platelets are considered. The NGPLs are assumed to be uniform and non-uniform distribution, as well as three types of targeted porosity distribution that change continuously along the thickness in each layer. This structure is always under influence of external fluid flow and modeled by the piston theory. Based on the higher-order shear deformation theory, the governing equations of motion of doubly curved panels reinforced with NGPL are obtained using extended Hamilton’s principle. Galerkin method is employed to transform the partial differential equations of motion into the ordinary equations. The effect of advanced materials including various patterns of porosity distribution, porosity coefficients, distribution or dispersion of nano graphene platelets, NGPL weight fraction, as well as the effect of structural geometric dimensions on vibrations and dynamic instabilities of structures are studied.

Keywords

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References

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History

  • Receive Date: 10 April 2020
  • Revise Date: 25 August 2020
  • Accept Date: 08 August 2021
  • Publish Date: 23 July 2021

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