Post-buckling Analysis Imperfect Stiffened Laminated Cylindrical Shells under Axial Compression

A buckling and post-buckling analysis is presented for an anisotropic laminated cylindrical shell of finite length to axial compression.The formulations are based on a boundary layer theory of thin shell's buckling which includes the effects of the nonlinear pre-buckling deformation,the nonlinear large deflection in the post-buckling range and the initial geometrical imperfection of the shell.The analysis uses a singular perturbation technique which takes deflection as perturbation parameter to determine the buckling load and post-buckling equilibrium paths.The large deflections of formulations are divided into a series of linear in the course of solving.The results are gotten according to the number given.The author thinks that a simple and accurate method is presented on the analysis of buckling and post-buckling.