Failure modes and buckling coefficient of partially stiffened cold-formed sections in bending

Abstract

Flange edge stiffeners increase the ultimate moment capacity of cold-formed channel sections. At the same time, they cause complexity to the buckling failure mode of the section. There is a lack of experimental research on the failure mode of sections with a partially stiffened element, such as channel sections with edge stiffeners, in which a distortional buckling mode can be observed. The focus of recent studies is mainly on the behaviour of the whole section as one member under bending without any concern about the relationship between the web and flange ratio. In this study, an extensive experimental analysis of 42 cold-formed channel sections was used to explore the failure behaviour of..