Coupled Local Buckling in Wide-Flange Beam-Columns

by Sundaramoorthy Rajasekaran, Postdoctoral Fellow; Univ. of Alberta, Edmonton, AB, Canada; on leave from P.S.G. Coll. of Tech., Coimbatore, India,
David W. Murray, (A.M.ASCE), Prof. of Civ. Engrg.; Univ. of Alberta, Edmonton, AB, Canada,

Serial Information: Journal of the Structural Division, 1973, Vol. 99, Issue 6, Pg. 1003-1023

Document Type: Journal Paper


A formulation has been developed that can form the basis for elastic or inelastic analysis of thin-walled beams with local and member buckling interaction. A finite element model was developed from this formation for elastic wide-flange beam which has 11 degrees-of-freedom at each node. The model yields good results for flange local buckling. The results verify that for wide-flange sections in the elastic range, the interactive effect is normally small, and local and member buckling are initiated as relatively detached phenomenon.

Subject Headings: Elastic analysis | Coupling | Buckling | Flanges | Beam columns | Beams | Finite element method | Structural models

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