Flange edge stiffeners can increase the ultimate moment capacity of cold-formed channel sections up to their post-yielding (inelastic) capacity. This paper investigates the post-yielding behaviour under bending of cold-formed channel sections with partially stiffened elements. The relevant literature was reviewed, experimental studies were carried out and a semi-empirical analysis was performed. Experimental and numerical analysis was undertaken of 40 cold-formed channel sections, each with a partially stiffened element. The results were compared with the existing Australian design rules and revisions are proposed to these rules. In addition, by using the test observations and the yield line mechanism model, the ultimate capacity of the tested sections was determined and compared with the test results. The model was found to provide accurate and reliable capacity predictions for slender cold-formed channel sections under bending.
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April 2015
Research Article|
April 01 2015
Post-yield capacity of cold-formed channel sections in bending
Soheila Maduliat, PhD;
Soheila Maduliat, PhD
Research Fellow
Department of Infrastructure Engineering, The University of Melbourne, Australia
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Priyan Mendis, PhD;
Priyan Mendis, PhD
Professor and Discipline Leader in Civil Engineering
Department of Infrastructure Engineering, The University of Melbourne, Australia
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Tuan Duc Ngo, PhD
Tuan Duc Ngo, PhD
Senior Lecturer
Department of Infrastructure Engineering, The University of Melbourne, Australia
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Publisher: Emerald Publishing
Revision Received:
May 13 2014
Accepted:
May 13 2014
Online ISSN: 1751-7702
Print ISSN: 0965-0911
ICE Publishing: All rights reserved
2015
Proceedings of the Institution of Civil Engineers - Structures and Buildings (2015) 168 (4): 251–262.
Article history
Revision Received:
May 13 2014
Accepted:
May 13 2014
Citation
Maduliat S, Mendis P, Ngo TD (2015), "Post-yield capacity of cold-formed channel sections in bending". Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 168 No. 4 pp. 251–262, doi: https://doi.org/10.1680/stbu.13.00052
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