A General Theory for the Flexural-Torsional Buckling of Thin-Walled Members I: Energy Method

2003 ◽  
Vol 6 (4) ◽  
pp. 293-298 ◽  
Author(s):  
Gengshu Tong ◽  
Lei Zhang
Keyword(s):  
General Theory ◽  
Energy Method ◽  
Torsional Buckling ◽  
Thin Walled ◽  
Flexural Torsional Buckling

Thin-Walled Cold-Formed Steel Beams with Holes in Lateral Flexural-Torsional Buckling

2013 ◽  
Vol 743 ◽  
pp. 170-175 ◽  
Author(s):  
Marcela Karmazínová ◽  
Jindrich Melcher ◽  
Martin Horáček
Keyword(s):  
Cross Section ◽  
Stability Problem ◽  
Design Procedure ◽  
Steel Structures ◽  
Torsional Stiffness ◽  
Steel Beams ◽  
Torsional Buckling ◽  
Cold Formed Steel ◽  
Thin Walled ◽  
Flexural Torsional Buckling

In this paper the study on lateral flexural-torsional buckling of steel sigma-cross-section beams with web holes will be presented. The analysis of corresponding stability problem is based on general approach derived for a group of beams including at least mono-symmetric sections loaded transversally to their plane of symmetry. The effective flexural and torsional stiffness of steel beams with holes has been verified by tests. The results of theoretical analysis were compared with specification design procedure and also with actual behaviour of set of beams investigated by experiments. The study conclusions aim to become the background of the supplements to specified provisions for the design of steel structures.

A beam model for the flexural–torsional buckling of thin-walled members with some applications

2008 ◽  
Vol 46 (7-9) ◽  
pp. 816-822 ◽  
Author(s):  
G.C. Ruta ◽  
V. Varano ◽  
M. Pignataro ◽  
N.L. Rizzi
Keyword(s):  
Beam Model ◽  
Torsional Buckling ◽  
Thin Walled ◽  
Flexural Torsional Buckling

Flexural-Torsional Buckling Analysis of Steel Beam with Reduced Flanges

2011 ◽  
Vol 94-96 ◽  
pp. 437-442
Author(s):  
Ming Lan Han ◽  
Yan Wang
Keyword(s):  
Energy Method ◽  
Steel Beam ◽  
Calculation Formula ◽  
Torsional Buckling ◽  
Critical Moment ◽  
Reduced Beam Section ◽  
Uniform Beam ◽  
Beam Section ◽  
Rbs Connections ◽  
Flexural Torsional Buckling

Flexural-torsional buckling of the beam in steel frame with reduced beam section (RBS) connections is analyzed. Base on the analysis of flexural-torsional buckling of the RBS beam under different loads using energy method, the critical moment calculation formula of ordinary beam is modified, and the critical moment calculation formula of RBS beam is presented. Moreover law of the RBS beam critical moment varying with cut sizes and location is discussed when compared to the critical moment of the uniform beam. The results show that: reduction has great effect on flexural-torsional buckling of RBS beam, critical moment of the RBS beam obviously decreases as compared with ordinary uniform beam, but single cut parameter has small effect on changes in critical moment; the effect of reduction on beam stiffness decreases as beam span increases.

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