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Article: Corner properties of cold-formed steel sections at elevated temperatures

TitleCorner properties of cold-formed steel sections at elevated temperatures
Authors
KeywordsCold-formed steel
Corner
Elevated temperatures
Experimental investigation
Fire resistance design
Mechanical properties
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/tws
Citation
Thin-Walled Structures, 2006, v. 44 n. 2, p. 216-223 How to Cite?
AbstractThis paper presents the mechanical properties of the corner parts of cold-formed steel sections at elevated temperatures. Light-gauge structural members are cold-formed which results the mechanical properties of the corner parts being different from the flat parts. However, previous research has focused on the investigation of the corner parts of cold-formed steel sections at normal room temperature and the performance of the corner parts at elevated temperatures is unknown. An appropriate model for fire resistant design of steel structures necessitates a correct representation of mechanical properties of structural steel at elevated temperatures. Therefore, experimental investigation on corner coupon specimens at different temperatures ranged from approximately 20 to 1000 °C was conducted to study the behaviour of the corner parts of cold-formed steel sections at elevated temperatures. Two kinds of corner coupon specimens, namely the inner corner coupon specimens and outer corner coupon specimens having the steel grade of G500 (nominal 0.2% proof stress of 500 MPa) and nominal thickness of 1.9 mm were tested. The test results were compared with the flat coupon specimens taken from the same cold-formed steel sections as the corner coupon specimens. A unified equation to predict the yield strength (0.2% proof stress), elastic modulus, ultimate strength and ultimate strain of the corner parts of cold-formed steel sections at elevated temperatures is thus proposed in this paper. Generally, it is shown that the proposed equation adequately predicts the test results of the corner coupon specimens. Furthermore, stress-strain curves at different temperatures are plotted and a stress-strain model is also proposed for the corner parts of cold-formed steel sections. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71376
ISSN
2015 Impact Factor: 2.063
2015 SCImago Journal Rankings: 1.647
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Jen_HK
dc.contributor.authorYoung, Ben_HK
dc.date.accessioned2010-09-06T06:31:26Z-
dc.date.available2010-09-06T06:31:26Z-
dc.date.issued2006en_HK
dc.identifier.citationThin-Walled Structures, 2006, v. 44 n. 2, p. 216-223en_HK
dc.identifier.issn0263-8231en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71376-
dc.description.abstractThis paper presents the mechanical properties of the corner parts of cold-formed steel sections at elevated temperatures. Light-gauge structural members are cold-formed which results the mechanical properties of the corner parts being different from the flat parts. However, previous research has focused on the investigation of the corner parts of cold-formed steel sections at normal room temperature and the performance of the corner parts at elevated temperatures is unknown. An appropriate model for fire resistant design of steel structures necessitates a correct representation of mechanical properties of structural steel at elevated temperatures. Therefore, experimental investigation on corner coupon specimens at different temperatures ranged from approximately 20 to 1000 °C was conducted to study the behaviour of the corner parts of cold-formed steel sections at elevated temperatures. Two kinds of corner coupon specimens, namely the inner corner coupon specimens and outer corner coupon specimens having the steel grade of G500 (nominal 0.2% proof stress of 500 MPa) and nominal thickness of 1.9 mm were tested. The test results were compared with the flat coupon specimens taken from the same cold-formed steel sections as the corner coupon specimens. A unified equation to predict the yield strength (0.2% proof stress), elastic modulus, ultimate strength and ultimate strain of the corner parts of cold-formed steel sections at elevated temperatures is thus proposed in this paper. Generally, it is shown that the proposed equation adequately predicts the test results of the corner coupon specimens. Furthermore, stress-strain curves at different temperatures are plotted and a stress-strain model is also proposed for the corner parts of cold-formed steel sections. © 2006 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.subjectCold-formed steelen_HK
dc.subjectCorneren_HK
dc.subjectElevated temperaturesen_HK
dc.subjectExperimental investigationen_HK
dc.subjectFire resistance designen_HK
dc.subjectMechanical propertiesen_HK
dc.titleCorner properties of cold-formed steel sections at elevated temperaturesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0263-8231&volume=44&spage=216&epage=223&date=2006&atitle=Corner+Properties+of+Cold-formed+Steel+Sections+at+Elevated+Temperaturesen_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.2006.01.004en_HK
dc.identifier.scopuseid_2-s2.0-33646130862en_HK
dc.identifier.hkuros118225en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646130862&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue2en_HK
dc.identifier.spage216en_HK
dc.identifier.epage223en_HK
dc.identifier.isiWOS:000237753200009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChen, J=7501901977en_HK
dc.identifier.scopusauthoridYoung, B=7402192398en_HK

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