An analytical model is developed for analysing the elastic lateral-torsion buckling of cold-formed zed-purlins with partially lateral restraint from metal sheeting. The model is used to estimate the effects of warping stresses on the lateral-torsion buckling behavior of cold-formed zed-purlins with various boundaries and interval braces provided by antisag bars. The results show that the warping stress only has remarkable influence on the lateral-torsion buckling when the boundary of the member is fixed and there is no antisag bar present.
The Effect of Warping Stress on the Lateral-Torsion Buckling of Cold-Formed Zed-Purlins
Contributed by the Applied Mechanics Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF APPLIED MECHANICS. Manuscript received by the ASME Applied Mechanics Division, July 22, 2003, final revision, November 25, 2004. Associate Editor: S. Mukherjee.
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Chu, , X., Li, and , L., and Kettle , R. (November 9, 2004). "The Effect of Warping Stress on the Lateral-Torsion Buckling of Cold-Formed Zed-Purlins ." ASME. J. Appl. Mech. September 2004; 71(5): 742–744. https://doi.org/10.1115/1.1781178
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