Axial Buckling analysis of graphene platelets reinforced porous nanocomposite cylindrical shells using Rayleigh-Ritz method

In this article, axial buckling behavior of graphene platelets reinforced (GPLR) porous nanocomposite cylindrical shells on the basis of first-order shear deformation theory (FSDT) is explored. GPLs and internal porosities are distributed uniformly and functionally graded (FG) along the thickness direction. Effective Young’s modulus varying through the thickness is obtained by modified Halpin-Tsai micromechanics model, whereas, density and Poisson’s ratio of cylindrical shell consisted of porous matrix and GPLs reinforcementare computed according to rule of mixtures. Classical Rayleigh-Ritz method is used to acquire critical buckling load of aforementioned shell. To the aim of convenience, parameters are normalized and computations are carried out according to dimensionless parameters. Validity of the numerical results of applying current solution is examined by comparison with results published in the availableliterature. Additionally, effects of applying different patterns of GPLs and internal porosities distribution, porosity coefficient and total layer number on the axial buckling behavior of graphene platelets reinforced porous nanocomposite cylindrical shell are investigated.

کلیدواژه ها:

Rayleigh-Ritz method ، Graphene reinforced ، Buckling ، Porous ، Cylindrical shell