Strength and ductility of steel stiffened plates under cyclic loading

摘要

In this paper, numerical results of ductility of steel stiffened plates subjected to cyclic loading are presented. The width-thickness ratio parameter, aspect ratio and stiffener's slenderness ratio parameter are taken to be mian parameters of the plates. To account for material nonlinearity, a modified two-surface model is employed to trace accurately the inelastic cyclic behavior of steel. In the analysis, two kinds of cyclic loading sequences are considered. For a comparison, monotonic analysis of the stiffened plate is also carried out. As a result, a modification factor considering the effect of aspect ratio is introduced to the previously proposed ductility formula for stiffened plates.