Nonlinear buckling of stiffened FG-GRCL cylindrical panels under axial compression with the uniformly distributed temperature variation
Computational Laboratory for Advanced Materials and Structures, Advanced Institute of Materials Science, Ton Duc Thang University, 700000, Ho Chi Minh City, Vietnam
2 Faculty of Civil Engineering, Ton Duc Thang University, 700000, Ho Chi Minh City, Vietnam
3 Faculty of Civil Engineering, University of Transport Technology, 100000, Hanoi, Vietnam
Accepted: 24 February 2023
Published online: 11 March 2023
The buckling and postbuckling response of functionally graded graphene reinforced composite laminated (FG-GRCL) cylindrical panels rested on nonlinear elastic foundation, stiffened by stiffeners and subjected to axial compression load in the uniformly distributed temperature variation are investigated in this paper. Distribution laws of graphene with five types (UD, FG-X, FG-A, FG-V, and FG-O) are investigated. In which, graphene volume fractions of the layers are considered the same for the UD type and vary with the thickness direction for the FG-X and FG-O types. The GRCL stiffeners are used suitably for each graphene distributed types of panel. The fundamental equations for the buckling and postbuckling of the FG-GRCL cylindrical panels are founded on Reddy’s higher-order shear deformation shell theory (HSDST), the relations between strain and displacement of von Kármán and the Galerkin method. The theoretical novelty of this paper is focused on the novel technique for the homogenization of the GRC laminated panel and stiffeners. The significant influences of GRC stiffeners are confirmed in the numerical results, the influences of material and geometrical properties of the panel, nonlinear foundation, and temperature are also discussed.
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