Abstract
A cylindrical shell is a representative structure that exhibits buckling. To investigate the nonlinear behavior of this shell, the arc-length method or load–displacement control Newton–Raphson numerical analysis method is used. In this study, the buckling and post-buckling phenomena of composite shells were investigated, and the fracture phenomena of composites were evaluated for their load–displacement behaviors. Composite buckling is a complex process compared to those of isotropic materials. Moreover, in the case of a laminated composite material, it is difficult to accurately identify the time and place at which a failure might occur because various stress components and interlayer shear stresses interact with each other. Using the arc-length nonlinear numerical analysis method, the failure phenomena were clearly identified along the behavioral path of the composite shell after buckling, and the differences were confirmed via various composite failure theories.
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