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The dynamic torsional buckling and post-buckling of elasto-plastic circular cylindrical shell isstudied.By the usage of the Bodner-Partom constitutive relation,the present visco-plastic problem is treat-ed as an orthotropic elastic problem.Based on the nonlinear large deflection shell therory,the governingdynamic buckling equation is solved by the Runge-Kutta method,and the critical buckling stress is deter-mined by the B-R criterion.The present paper is mainly focused on the imperfection sensitivity,the strainrate sensitivity,and the dynamic post-buckling characters for the shell loaded dynamically with a constantshear strain rate.Numerical results show that the critical shear stress and imperfection sensitivity will in-crease with the increase of strain rate.It is found that the elastic buckling stress is more sensitive toimperfection than the visco-plastic buckling.The present research also reveals some dynamic post-bucklingcharacters for the cylindrical shell,and it is shown that the shell will vibra
The dynamic torsional buckling and post-buckling of elasto-plastic circular cylindrical shells is constructed. By the usage of the Bodner-Partom constitutive relation, the present visco-plastic problem is treat-ed as an orthotropic elastic problem. Based on the nonlinear large deflection shell therory, the governing dynamic buckling equation is solved by the Runge-Kutta method, and the critical buckling stress is deter- mined by the BR criterion. The present paper is mainly focused on the imperfection sensitivity, the strain rate sensitivity, and the dynamic post- buckling characters for the shell loaded dynamically with a constantshear strain rate. Numerical results show that the critical shear stress and imperfection sensitivity will in-crease with the increase of strain rate. It is found that the elastic buckling stress is more sensitive toimperfection than the visco -plastic buckling.The present research also reveals some dynamic post-bucklingcharacters for the cylindrical shell, and it is shown that t he shell will vibra