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Article: Material properties of cold-formed lean duplex stainless steel sections

TitleMaterial properties of cold-formed lean duplex stainless steel sections
Authors
KeywordsCold-formed
Coupon tests
Finite element models
Lean duplex
Stub column test
Issue Date2012
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/tws
Citation
Thin-walled Structures, 2012, v. 54, p. 72-81 How to Cite?
AbstractThis paper presents the behaviour of cold-formed lean duplex stainless steel for six different sections, among which two are square hollow sections and four are rectangular hollow sections. The test specimens were cold-rolled from flat strips of lean duplex stainless steel. The material properties of high strength cold-formed lean duplex stainless steel square and rectangular hollow sections were determined. Tensile coupons in the flat portions and corners of each section were tested. Hence, the Youngs moduli, 0.2% proof stresses, 1.0% proof stresses, tensile strengths, elongation at fracture and the RambergOsgood parameter (n) of lean duplex material for each section were measured. The material properties of the complete cross-sections in the cold-worked state were also obtained from stub column tests. The initial local geometric imperfections of the six sections were measured, and the profiles of the local imperfections along cross-section were plotted for each section. Residual stresses were measured for section 150×50×2.5 using the method of sectioning. The membrane and bending residual stress distributions in the cross-section were obtained and plotted. Furthermore, finite element model of stub columns was developed and compared well with the test results. The stub column test strengths were also compared with the design strengths predicted by the American Specification, Australian/New Zealand Standard and European Code for stainless steel structures. Generally, the three specifications conservatively predicted the column strengths. The European Code provides the most conservative prediction. © 2012 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/150659
ISSN
2015 Impact Factor: 2.063
2015 SCImago Journal Rankings: 1.647
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong
Funding Information:

The authors are grateful to STALA Tube Finland for supplying the lean duplex stainless steel test specimens. The research work described in this paper was supported by a grant from The University of Hong Kong under the seed funding programme for basic research.

References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Yen_US
dc.contributor.authorYoung, Ben_US
dc.date.accessioned2012-06-26T06:06:31Z-
dc.date.available2012-06-26T06:06:31Z-
dc.date.issued2012en_US
dc.identifier.citationThin-walled Structures, 2012, v. 54, p. 72-81en_US
dc.identifier.issn0263-8231en_US
dc.identifier.urihttp://hdl.handle.net/10722/150659-
dc.description.abstractThis paper presents the behaviour of cold-formed lean duplex stainless steel for six different sections, among which two are square hollow sections and four are rectangular hollow sections. The test specimens were cold-rolled from flat strips of lean duplex stainless steel. The material properties of high strength cold-formed lean duplex stainless steel square and rectangular hollow sections were determined. Tensile coupons in the flat portions and corners of each section were tested. Hence, the Youngs moduli, 0.2% proof stresses, 1.0% proof stresses, tensile strengths, elongation at fracture and the RambergOsgood parameter (n) of lean duplex material for each section were measured. The material properties of the complete cross-sections in the cold-worked state were also obtained from stub column tests. The initial local geometric imperfections of the six sections were measured, and the profiles of the local imperfections along cross-section were plotted for each section. Residual stresses were measured for section 150×50×2.5 using the method of sectioning. The membrane and bending residual stress distributions in the cross-section were obtained and plotted. Furthermore, finite element model of stub columns was developed and compared well with the test results. The stub column test strengths were also compared with the design strengths predicted by the American Specification, Australian/New Zealand Standard and European Code for stainless steel structures. Generally, the three specifications conservatively predicted the column strengths. The European Code provides the most conservative prediction. © 2012 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/twsen_US
dc.relation.ispartofThin-walled Structuresen_US
dc.subjectCold-formeden_US
dc.subjectCoupon testsen_US
dc.subjectFinite element modelsen_US
dc.subjectLean duplexen_US
dc.subjectStub column testen_US
dc.titleMaterial properties of cold-formed lean duplex stainless steel sectionsen_US
dc.typeArticleen_US
dc.identifier.emailYoung, B: young@hku.hken_US
dc.identifier.authorityYoung, B=rp00208en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.tws.2012.02.003en_US
dc.identifier.scopuseid_2-s2.0-84862816687-
dc.identifier.hkuros209551-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84857663946&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume54en_US
dc.identifier.spage72en_US
dc.identifier.epage81en_US
dc.identifier.isiWOS:000303621500007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYoung, B=7402192398en_US
dc.identifier.scopusauthoridHuang, Y=55041789800en_US
dc.identifier.citeulike10438734-

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