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Article: Design of cold-formed steel unequal angle compression members

TitleDesign of cold-formed steel unequal angle compression members
Authors
KeywordsBuckling
Cold-formed steel
Column
Finite element
Modelling
Steel structures
Structural design
Thin-walled structures
Unequal angle
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/tws
Citation
Thin-Walled Structures, 2007, v. 45 n. 3, p. 330-338 How to Cite?
AbstractCold-formed steel unequal angles are non-symmetric sections. The design procedure of non-symmetric sections subjected to axial compression load could be quite difficult. The unequal angle columns may fail by different buckling modes, such as local, flexural and flexural-torsional buckling as well as interaction of these buckling modes. The purpose of this study is to investigate the behaviour and design of cold-formed steel unequal angle columns. A nonlinear finite element analysis was conducted to investigate the strength and behaviour of unequal angle columns. The measured initial local and overall geometric imperfections as well as the material properties of the angle specimens were included in the finite element model. The finite element analysis was performed on fixed-ended columns for different lengths ranged from stub to long columns. It is demonstrated that the finite element model closely predicted the experimental ultimate loads and the behaviour of cold-formed steel unequal angle columns. Hence, the model was used for an extensive parametric study of cross-section geometries. The column strengths obtained from the parametric study were compared with the design strengths calculated using the North American Specification for cold-formed steel structural members. It is shown that the current design rules are generally unconservative for short and intermediate column lengths for the unequal angles. Therefore, design rules of cold-formed steel unequal angle columns are proposed. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71358
ISSN
2015 Impact Factor: 2.063
2015 SCImago Journal Rankings: 1.647
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYoung, Ben_HK
dc.contributor.authorEllobody, Een_HK
dc.date.accessioned2010-09-06T06:31:16Z-
dc.date.available2010-09-06T06:31:16Z-
dc.date.issued2007en_HK
dc.identifier.citationThin-Walled Structures, 2007, v. 45 n. 3, p. 330-338en_HK
dc.identifier.issn0263-8231en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71358-
dc.description.abstractCold-formed steel unequal angles are non-symmetric sections. The design procedure of non-symmetric sections subjected to axial compression load could be quite difficult. The unequal angle columns may fail by different buckling modes, such as local, flexural and flexural-torsional buckling as well as interaction of these buckling modes. The purpose of this study is to investigate the behaviour and design of cold-formed steel unequal angle columns. A nonlinear finite element analysis was conducted to investigate the strength and behaviour of unequal angle columns. The measured initial local and overall geometric imperfections as well as the material properties of the angle specimens were included in the finite element model. The finite element analysis was performed on fixed-ended columns for different lengths ranged from stub to long columns. It is demonstrated that the finite element model closely predicted the experimental ultimate loads and the behaviour of cold-formed steel unequal angle columns. Hence, the model was used for an extensive parametric study of cross-section geometries. The column strengths obtained from the parametric study were compared with the design strengths calculated using the North American Specification for cold-formed steel structural members. It is shown that the current design rules are generally unconservative for short and intermediate column lengths for the unequal angles. Therefore, design rules of cold-formed steel unequal angle columns are proposed. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/twsen_HK
dc.relation.ispartofThin-Walled Structuresen_HK
dc.subjectBucklingen_HK
dc.subjectCold-formed steelen_HK
dc.subjectColumnen_HK
dc.subjectFinite elementen_HK
dc.subjectModellingen_HK
dc.subjectSteel structuresen_HK
dc.subjectStructural designen_HK
dc.subjectThin-walled structuresen_HK
dc.subjectUnequal angleen_HK
dc.titleDesign of cold-formed steel unequal angle compression membersen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0263-8231&volume=45&spage=330&epage=338&date=2007&atitle=Design+of+Cold-formed+Steel+Unequal+Angle+Compression+Membersen_HK
dc.identifier.emailYoung, B:young@hku.hken_HK
dc.identifier.authorityYoung, B=rp00208en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.tws.2007.02.015en_HK
dc.identifier.scopuseid_2-s2.0-34248995563en_HK
dc.identifier.hkuros131060en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34248995563&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume45en_HK
dc.identifier.issue3en_HK
dc.identifier.spage330en_HK
dc.identifier.epage338en_HK
dc.identifier.isiWOS:000247577300008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYoung, B=7402192398en_HK
dc.identifier.scopusauthoridEllobody, E=8280203300en_HK

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