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Thermal buckling responses of a graphene reinforced composite micropanel structure

Moayedi, H ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1142/S1758825120500106
  3. Publisher: World Scientific Publishing Co. Pte Ltd , 2020
  4. Abstract:
  5. This is the first research on the thermal buckling analysis of graphene nanoplatelets reinforced composite (GPLRC) doubly curved open cylindrical micropanel in the framework of numerical-based two-dimensional generalized differential quadrature method (2D-GDQM). Additionally, the small-scale effects are analyzed based on nonlocal strain gradient theory (NSGT). The stresses and strains are obtained using the high-order shear deformable theory (HOSDT). The rule of mixture is employed to obtain varying thermal expansion, and Poisson's ratio, while module of elasticity is computed by modified Halpin-Tsai model. In addition, nonlinear temperature changes along the GPLRC micropanel's thickness direction. Governing equations and boundary conditions of the GPLRC doubly curved open cylindrical micropanel are obtained by implementing the extended Hamilton's principle. Besides, for the validation of the results, the results of current model are compared to the results acquired from analytical method. The results show that GPL weight function (gGPL), the ratio of shell curvatures (R1/R2), NSG parameters, and geometric parameters have a significant influence on the thermal buckling characteristics of the GPLRC doubly curved open cylindrical micropanel. © 2020 World Scientific Publishing Europe Ltd
  6. Keywords:
  7. Differentiation (calculus) ; Elasticity ; Graphene ; Graphene nanoplatelets ; Numerical methods ; Reinforcement ; Strain ; Structural design ; Thermal expansion ; 2D-GDQM ; Doubly curved open cylindrical micropanel ; Generalized differential quadrature methods ; GPLRC ; Reinforced composites ; Shear deformable theories ; Strain gradient theory ; Thermal buckling ; Buckling
  8. Source: International Journal of Applied Mechanics ; Volume 12, Issue 1 , 2020
  9. URL: https://www.worldscientific.com/doi/abs/10.1142/S1758825120500106