Lateral postbuckling analysis of beam columns

Kounadis, AN; Ioannidis, GI

dc.contributor.author	Kounadis, AN	en
dc.contributor.author	Ioannidis, GI	en
dc.date.accessioned	2014-03-01T01:09:57Z
dc.date.available	2014-03-01T01:09:57Z
dc.date.issued	1994	en
dc.identifier.issn	07339399	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11261
dc.subject.other	Bearing capacity	en
dc.subject.other	Bending (deformation)	en
dc.subject.other	Buckling	en
dc.subject.other	Columns (structural)	en
dc.subject.other	Nonlinear equations	en
dc.subject.other	Structural analysis	en
dc.subject.other	Axial compression	en
dc.subject.other	Elastic lateral postbuckling response	en
dc.subject.other	Geometrically perfect beams	en
dc.subject.other	Postbuckling equilibrium path	en
dc.subject.other	Uniform bending	en
dc.subject.other	Beams and girders	en
dc.title	Lateral postbuckling analysis of beam columns	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)0733-9399(1994)120:4(695)	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)0733-9399(1994)120:4(695)	en
heal.publicationDate	1994	en
heal.abstract	The elastic lateral postbuckling response of geometrically perfect beams, under simultaneously uniform bending and axial compression, is examined in the vicinity of the critical bifurcational state. The field equations, which include the warping effect of the cross section, are highly nonlinear due to the nonlinear bending-moment-curvature relationship. The stability of the critical state associated with a stable bifurcation point is analytically established using a comprehensive approach. Therefore, these beam columns are not sensitive to initial imperfections, exhibiting postbuckling strength. However, the postbuckling equilibrium path is quite shallow (becoming more shallow with the increase of the axial force), so the load-carrying capacity of such beam columns above the critical state is rather limited. The analysis is supplemented by illustrative examples for I-beam columns for which the effect of various parameters on the initial postbuckling path is also discussed.	en
heal.publisher	Publ by ASCE, New York, NY, United States	en
heal.journalName	Journal of Engineering Mechanics	en
dc.identifier.doi	10.1061/(ASCE)0733-9399(1994)120:4(695)	en
dc.identifier.volume	120	en
dc.identifier.issue	4	en
dc.identifier.spage	695	en
dc.identifier.epage	706	en