Analyses of distortional buckling of cold-formed sigma purlins using EN1993-1-3

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Authors

Colleges, School and Institutes

Abstract

This technical note presents a study on the calculation of the critical stress of distortional buckling of cold-formed sigma purlins using EN1993-1-3. The discussion is focussed on the determination of the spring stiffness of the stiffened element, a problem which has not yet been addressed in most design codes. Different support conditions at both the tension and compression ends of the web are employed and their influences on the critical stress of distortional buckling of sigma purlins are investigated. Comparison with finite strip analysis indicates that the model having a fixed support for the tension end and a roller support for the compression end of the web provides the best fit to the finite strip analysis. (C) 2009 Elsevier Ltd. All rights reserved.

Details

Original languageEnglish
Pages (from-to)2099-2102
Number of pages4
JournalJournal of Constructional Steel Research
Volume65
Issue number12
Publication statusPublished - 1 Dec 2009

Keywords

  • Critical stress, Cold-formed, Sigma section purlin, Distortional buckling