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Article: Global Instability of Elliptical Hollow Section Beam-columns under Compression and Biaxial Bending

TitleGlobal Instability of Elliptical Hollow Section Beam-columns under Compression and Biaxial Bending
Authors
Issue Date2013
PublisherKorean Society of Steel Construction and Springer. The Journal's web site is located at http://www.ijoss.org/
Citation
International Journal of Steel Structures, 2013, v. 13 How to Cite?
AbstractThe global instability of elliptical hollow section members under combined compression plus biaxial bending is studied in this paper by means of laboratory testing and numerical simulations. A total of 9 beam-column tests were carried out under different combinations of compression and bending about both principal axes. The material properties of the tested sections were determined by means of tensile coupon tests. All tested elliptical hollow sections were EHS 150x75x5, and three nominal member lengths of 1 m, 2 m and 3 m were considered. Graphs of applied load versus mid-span bending moment, based on theoretical first and second order elastic considerations and the experimental second order inelastic response, are presented and described. Numerical models were initially validated against the experimental data using measured material and geometric properties, including imperfections. The models were subsequently employed in parametric studies to assess the influence of member slenderness and cross-sectional aspect ratio on the structural response. Finally, based on the experimental and numerical findings, design rules for hot-finished EHS beam-columns were assessed and statistically verified.
Persistent Identifierhttp://hdl.handle.net/10722/202623

 

DC FieldValueLanguage
dc.contributor.authorLaw, KHen_US
dc.contributor.authorGardner, Len_US
dc.date.accessioned2014-09-19T09:14:06Z-
dc.date.available2014-09-19T09:14:06Z-
dc.date.issued2013en_US
dc.identifier.citationInternational Journal of Steel Structures, 2013, v. 13en_US
dc.identifier.urihttp://hdl.handle.net/10722/202623-
dc.description.abstractThe global instability of elliptical hollow section members under combined compression plus biaxial bending is studied in this paper by means of laboratory testing and numerical simulations. A total of 9 beam-column tests were carried out under different combinations of compression and bending about both principal axes. The material properties of the tested sections were determined by means of tensile coupon tests. All tested elliptical hollow sections were EHS 150x75x5, and three nominal member lengths of 1 m, 2 m and 3 m were considered. Graphs of applied load versus mid-span bending moment, based on theoretical first and second order elastic considerations and the experimental second order inelastic response, are presented and described. Numerical models were initially validated against the experimental data using measured material and geometric properties, including imperfections. The models were subsequently employed in parametric studies to assess the influence of member slenderness and cross-sectional aspect ratio on the structural response. Finally, based on the experimental and numerical findings, design rules for hot-finished EHS beam-columns were assessed and statistically verified.en_US
dc.languageengen_US
dc.publisherKorean Society of Steel Construction and Springer. The Journal's web site is located at http://www.ijoss.org/en_US
dc.relation.ispartofInternational Journal of Steel Structuresen_US
dc.titleGlobal Instability of Elliptical Hollow Section Beam-columns under Compression and Biaxial Bendingen_US
dc.typeArticleen_US
dc.identifier.emailLaw, KH: adalaw@hku.hken_US
dc.identifier.hkuros235598en_US
dc.identifier.volume13en_US

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