Experimental and numerical studies of the shear behaviour of litesteel beams

Poologanathan, Keerthan & Mahendran, Mahen (2008) Experimental and numerical studies of the shear behaviour of litesteel beams. In 19th International Specialty Conference on Cold-Formed Steel Structures 2008, October 14 & 16, 2008, St. Louis, Missouri USA.

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Abstract

This paper presents the details of experimental and numerical studies on the shear behaviour of a recently developed, cold-formed steel beam known as LiteSteel Beam (LSB). The LSB section is produced by a patented manufacturing process involving simultaneous cold-forming and electric resistance welding. It has a unique shape of a channel beam with two rectangular hollow flanges, made using a unique manufacturing process. To date, no research has been undertaken on the shear behaviour of LiteSteel beams with torsionally rigid, rectangular hollow flanges. In the present investigation, a series of numerical analyses based on three-dimensional finite element modelling and an experimental study were carried out to investigate the shear behaviour of 13 different LSB sections. It was found that the current design rules in cold-formed steel structures design codes are very conservative for the shear design of LiteSteel beams. Improvements to web shear buckling occurred due to the presence of rectangular hollow flanges while considerable post-buckling strength was also observed. Experimental and numerical analysis results are presented and compared with corresponding predictions from the current design codes in this paper.

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ID Code: 16902
Item Type: Conference Paper
Refereed: Yes
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2008 (please consult author)
Deposited On: 15 Dec 2008 00:47
Last Modified: 29 Feb 2012 13:42

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