Combined Distortional and Overall Flexural-Torsional Buckling of Cold-Formed Stainless Steel Sections: Design
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Volume 136, Issue 4
Abstract
This paper provides a critical summary of the European standards and design methods available for calculating the strength of cold-formed stainless steel compression members. The standards considered (so far mainly applied to columns failing by flexural buckling) are applied to the case of lipped channel section columns failing by combined distortional and overall flexural-torsional buckling. As observed during the tests presented in a companion paper, distortional buckling is found to have a considerable effect on the cross section resistance and is prone to interact with the global flexural-torsional mode. It is investigated how the different formulations account for the two buckling modes and their interaction and how accurate strength predictions they provide. A new direct strength method taking into account these failure modes is then presented and compared to the test results.
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Acknowledgments
B.R. is supported by the Belgian National Fund for Scientific Research (F.R.S.-FNRS), which is gratefully acknowledged. The Rotary District 1630 is also acknowledged for having granted B.R. its scholarship to Sydney.
References
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Information
Published In
Journal of Structural Engineering
Volume 136 • Issue 4 • April 2010
Pages: 361 - 369
Copyright
© 2010 ASCE.
History
Received: Jan 7, 2009
Accepted: Nov 2, 2009
Published online: Nov 4, 2009
Published in print: Apr 2010
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