Abstract
The localization of axisymmetric plastic buckling patterns of cylindrical shells is investigated in terms of its influence on the strength deterioration under cyclic loading. Since the localization phenomenon is caused by the plastic bifurcation in the post-peak range, we first showed a rigorous method to analyze the plastic bifurcation under two-axial stresses. Then, using the proposed method, we examined the effects of structural parameters as well as constitutive models on the localization behavior. As a result, it was observed that the strength deterioration under cyclic loading is significant when the radius-thickness ratio (R/t) and length-radius ratio (L/R) are large.
