Lateral-torsional buckling of simply supported beams under uniform bending and axial tensile force

Ioannidis, GI; Avraam, TP

dc.contributor.author	Ioannidis, GI	en
dc.contributor.author	Avraam, TP	en
dc.date.accessioned	2014-03-01T11:47:00Z
dc.date.available	2014-03-01T11:47:00Z
dc.date.issued	2012	en
dc.identifier.issn	09391533	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/38068
dc.subject	Axial tension	en
dc.subject	Buckling	en
dc.subject	Critical state	en
dc.subject	Lateral-torsional	en
dc.subject	Postbuckling path	en
dc.title	Lateral-torsional buckling of simply supported beams under uniform bending and axial tensile force	en
heal.type	other	en
heal.identifier.primary	10.1007/s00419-012-0680-y	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00419-012-0680-y	en
heal.publicationDate	2012	en
heal.abstract	In this paper, the effect of a centrally applied external axial tensile load on the lateral-torsional buckling resistance of simply supported I-beams under uniform bending acting in the plane of maximum rigidity is studied. A linear and a nonlinear analysis are performed. Following the linear analysis, an expression for the critical moment of lateral-torsional buckling is presented in which the influence of the axial tensile force is included. There is an upper limit of this force over which the equilibrium in the deformed state is not possible. In the nonlinear analysis, the nature of the critical state is studied, considering the initial part of the post-buckling path. It is concluded that this critical state is associated with a stable symmetrical bifurcation point. Nevertheless, the post-buckling path is very shallow; therefore, the beam cannot exhibit practically post-buckling strength. The paper is supplemented by a representative example. © 2012 Springer-Verlag.	en
heal.journalName	Archive of Applied Mechanics	en
dc.identifier.doi	10.1007/s00419-012-0680-y	en
dc.identifier.spage	1	en
dc.identifier.epage	10	en