On the relevance of localdistortional interaction effects in the behaviour and design of cold-formed steel columns
Relevance of web-triggered LD interaction in cold-formed steel columns investigated. Numerical results concerning lipped channel, hat, zed and rack-section columns presented. Two quite different types of LD mode interaction are identified and characterised. Development/calibration of DSM-based design approaches against LD interactive failures. Use of numerical/experimental ultimate strengths to assess the DSM design approach merits.
localdistortional interaction cold-formed steel columns lipped channel hat ultimate strength zed and rack cross-sections post-buckling behaviour direct strength method (dsm)