Abstract
The buckling behavior of an elastoplastic cylindrical shell with a cutout under pure bending was investigated analytically and experimentally. For analysis, a finite element code based on an updated Lagrangian formulation was established to analyze the problem of bending buckling by considering nonlinear geometric and material properties. An iterative displacement-controlled scheme was adopted in the solution procedure to ensure the pure bending state and to avoid numerical instability near the limiting buckling moment. A testing device was used to perform experiments on bending buckling. The ratio of diameter to thickness of the aluminum specimens was 50; the ratio of length to diameter was 7.9. The shape of the cutout on the shell was circular or rectangular. The influence of the size and location of the cutout on the limiting buckling moment is discussed. Antisymmetric deformation around the cutout in the shells was observed after bending buckling of the shell.
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