Nonlinear behavior of cold-formed stainless steel built-up box sections under axial compression

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dc.contributor.author Roy, Krishanu
dc.contributor.author Lau, Hieng Ho
dc.contributor.author Ahmed, Abdeliazim Mustafa Mohamed
dc.contributor.author Lim, James BP
dc.date.accessioned 2021-03-16T01:07:34Z
dc.date.available 2021-03-16T01:07:34Z
dc.date.issued 2021-4-1
dc.identifier.issn 2352-0124
dc.identifier.uri https://hdl.handle.net/2292/54684
dc.description.abstract © 2021 Institution of Structural Engineers Stainless steel is a highly versatile material, possessing a unique selection of properties that can be exploited in structural (load bearing) applications. In cold-formed steel structures, such as trusses, wall frames and portal frames, the use of built-up cold-formed stainless steel box sections as compression members are becoming popular. The AISI/ASCE Standard, SEI/ASCE-8–02 and AS/NZS do not include the design of stainless-steel built-up channels and very few experimental tests or finite element analyses have been reported in the literature for such face to-face cold-formed stainless-steel channel box sections. Thus, this paper presents a numerical investigation on the behavior of cold-formed stainless-steel built-up channel box sections. Three different grades of stainless steel i.e., duplex EN1.4462, ferritic EN1.4003 and austenitic EN1.4404 were considered. Effect of screw spacing on the axial strength of such built-up channel box sections was investigated. As expected, most of the short and intermediate columns failed by either local–global buckling interaction or just by local buckling, whereas the long columns, failed by global buckling. A comprehensive parametric study was carried out covering a wide range of slenderness and different cross-sectional geometries to assess the performance of the design guidelines by AISI and AS/NZS. In total, 180 finite element models were analyzed. From the results of the parametric study, it was found that the AISI and AS/NZS are conservative by around 15% for duplex grade (EN1.4462) of stainless-steel built-up box columns. However, for ferritic (EN1.4003) and austenitic (EN1.4404) grades of stainless-steel built-up box columns, the AISI and AS/NZS were conservative by only 5%.
dc.language en
dc.publisher Elsevier BV
dc.relation.ispartofseries Structures
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
dc.subject 0905 Civil Engineering
dc.subject 1202 Building
dc.title Nonlinear behavior of cold-formed stainless steel built-up box sections under axial compression
dc.type Journal Article
dc.identifier.doi 10.1016/j.istruc.2020.12.058
pubs.begin-page 390
pubs.volume 30
dc.date.updated 2021-02-13T02:27:47Z
dc.rights.holder Copyright: The author en
pubs.end-page 408
pubs.publication-status Accepted
dc.rights.accessrights http://purl.org/eprint/accessRights/RetrictedAccess en
pubs.subtype Journal Article
pubs.elements-id 838079
dc.identifier.eissn 2352-0124


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