Postbuckling of a shear-deformable anisotropic laminated cylindrical shell under external pressure in thermal environments |
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Authors: | Zhi-Min Li |
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Institution: | (1) School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200030, People’s Republic of China |
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Abstract: | A postbuckling analysis is presented for a shear-deformable anisotropic laminated cylindrical shell of finite length subjected
to external pressure in thermal environments. The material properties are expressed as linear functions of temperature. The
governing equations are based on Reddy’s higher-order shear-deformation shell theory with the von Karman-Donnell-type kinematic
nonlinearity. The nonlinear prebuckling deformations and initial geometric imperfections of the shell are both taken into
account. The boundary-layer theory of shell buckling, which includes the effects of nonlinear prebuckling deformations, large
deflections in the postbuckling region, and the initial geometric imperfections of the shell, is extended to the case of shear-deformable
anisotropic laminated cylindrical shells under lateral or hydrostatic pressure in thermal environments. The singular perturbation
technique is employed to determine the interactive buckling loads and postbuckling equilibrium paths. The results obtained
show that the variation in temperature, layer setting, and the geometric parameters of such shells have a significant influence
on their buckling load and postbuckling behavior.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 43, No. 6, pp. 789–822, November–December, 2007. |
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Keywords: | postbuckling shear-deformable anisotropic laminated cylindrical shell thermal effect boundary-layer theory of shell buckling singular perturbation technique |
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