An analytical model for analysing distortional buckling of cold-formed steel sections

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Colleges, School and Institutes


This paper presents an analytical model for predicting the critical stress of distortional buckling of cold-formed steel sections. Closed-form expressions are derived and validated by using the finite-strip method. Comprehensive comparisons are made between several alternative methods for determining the minimum elastic distortional buckling stress for zed and sigma sections, which demonstrates that the present model provides a good prediction of the distortional buckling stress, despite its simplicity. (c) 2008 Elsevier Ltd. All rights reserved.


Original languageEnglish
Pages (from-to)1430-1436
Number of pages7
JournalThin-Walled Structures
Issue number12
Publication statusPublished - 1 Dec 2008


  • Cold-formed, Thin-walled structures, Elastic stability, Sigma section, Distortional buckling