DURABILITY UNDER REPEATED BUCKLING OF STIFFENED SHEAR PANELS

A parameteric experimental investigation was conducted into the durability of stiffened metal shear panels subjected to repeated bucklings. The numbers of repeated buckling cycles required to crack initiation and to complete failure of the shear webs were obtained for beams with various combinations of web thicknesses, stiffener properties, and panel aspect ratios, subjected to various levels of postbuckling loads. The tests were supported by numerical analyses. Design prediction formulas were constructed, and important parameters and behavior patterns were identified.