Finite element analysis of web crippling behaviour of cold-formed steel flexural members

The resistance of cold-formed thin-walled steel cassettes against local transverse forces, i.e. the web crippling capacity, was investigated both experimentally and numerically using finite element analysis. Both unreinforced (flat) cassette webs and webs with longitudinal stiffeners situated on only one side of the web mid-line were studied. The calculation of the web crippling capacity of this type of stiffened webs is not included in current design codes.