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Elastic lateral-torsional buckling of general cold-formed steel beams under uniform moment.
- Source :
-
Thin-Walled Structures . Oct2017, Vol. 119, p586-592. 7p. - Publication Year :
- 2017
-
Abstract
- The design of unbraced cold-formed steel beams must consider lateral-torsional buckling due to the low torsional stiffness associated with open cross-sections. The American Iron and Steel Institute incorporated design equations for the critical elastic lateral-torsional buckling stress in the North American Specification for the Design of Cold-Formed Steel Structural Members. These equations are based on elastic theory for singly-symmetric and doubly-symmetric sections. However, the equation for point-symmetric sections is only a rough approximation. Furthermore, there are no provisions for lateral-torsional buckling of non-symmetric sections, or sections oriented to non-principal axes. This paper investigates and develops a general formulation of the lateral-torsional buckling equation to broadly cover all cold-formed steel cross-sections. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02638231
- Volume :
- 119
- Database :
- Academic Search Index
- Journal :
- Thin-Walled Structures
- Publication Type :
- Academic Journal
- Accession number :
- 125419585
- Full Text :
- https://doi.org/10.1016/j.tws.2017.07.010