Ultimate load of cylindrically curved steel panels under pure shear

摘要

In this paper, an extensive numerical study is performed with the aim to investigate the post-buckling behavior of simply supported cylindrically curved steel panels subjected to a pure shear load. The main objective is to understand the influence of geometrical parameters, such as curvature and aspect ratio, but also it is aimed to examine how the level of the constraint of the edges affects the ultimate shear resistance. Finally, a new set of formulas are numerically derived, which allow estimation of the ultimate shear reduction factor of unstiffened curved panels with three different types of edge constraints, for various curvatures (up to 50) and various aspect ratios (up to 5). Moreover, the formulas use a similar base form as the one available in EN 1993-1-5 for the prediction of the ultimate shear load of a flat panel.