Numerical study of cold-formed steel beam subject to lateral-torsional buckling

Dolamune Kankanamge, Nirosha & Mahendran, Mahen (2011) Numerical study of cold-formed steel beam subject to lateral-torsional buckling. In 7th International Conference on Steel and Aluminium Structures (ICSAS11), 13-15 July 2011, Kuching, Malaysia.


The use of cold-formed steel members as structural columns and beams in residential, industrial and commercial buildings has increased significantly in recent times. This study is focused on the use of cold-formed steel sections as flexural members subject to lateral-torsional buckling. For this purpose a finite element model of a simply supported lipped channel beam under uniform bending was developed, validated using available numerical and experimental results, and used in a detailed parametric study. The moment capacity results were then compared with the predictions from the current ambient temperature design rules in the cold-formed steel structures codes of Australia, New Zealand, North America and Europe. European design rules were found to be conservative while Australian and American design rules were unsafe. This paper presents the results of the numerical study, the comparison with the current design rules and the new proposed design rules.

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ID Code: 49380
Item Type: Conference Paper
Refereed: Yes
Keywords: numerical study, cold-formed steel beams, lateral-torsional buckling
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 Please consult the authors.
Deposited On: 28 Mar 2012 23:34
Last Modified: 28 Mar 2012 23:48

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