Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14805
Title: Web rotational restraint in elastic distortional buckling of cold-formed lipped channel sections
Authors: Yao, J
Teng, JG 
Keywords: Approximate expression
Cold-formed steel
Distortional buckling
Lipped channel sections
Rotational restraint
Theoretical expression
Issue Date: 2008
Publisher: 中國力學學會<工程力學>期刊社
Source: 工程力学 (Engineering mechanics), 2008, v. 25, no. 4, p. 65-69 How to cite?
Journal: 工程力学 (Engineering mechanics) 
Abstract: The distortional buckling is one of important buckling modes for cold-formed lipped channel sections and the distortional buckling load depends significantly on the rotational restraint provided by the web to the flange during buckling deformation. So the thorough study on the rotational restraint for elastic distortional buckling analysis is presented. Analytical expressions for the rotational restraint are first derived for eight cases representing different combinations of stress states and deformation shapes of the web. Based on these analytical expressions, the effect of the deformation shape of the web is discussed in detail. Finally, an accurate simplified expression for the rotational restraint is proposed. The results of the present study are expected to be useful for the future development of a simple approximate formula for the distortional buckling load of cold-formed lipped channel columns for design use.
URI: http://hdl.handle.net/10397/14805
ISSN: 1000-4750
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