Nonlinear behaviour of back-to-back built-up cold-formed steel channel columns under compression - finite element modelling and parametric study

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dc.contributor.author Roy, Krishanu en
dc.contributor.author Ting, TTCH en
dc.contributor.author Lau, HH en
dc.contributor.author Lim, James en
dc.coverage.spatial Singapore en
dc.date.accessioned 2019-05-28T04:30:10Z en
dc.date.issued 2017-11-10 en
dc.identifier.uri http://hdl.handle.net/2292/46727 en
dc.description.abstract This paper presents a numerical investigation on the behavior and design of back-to-back built-up cold-formed steel channel columns subjected to axial compression. Numerical models were developed using general purpose finite element (FE) package ABAQUS, and have been verified using experimental data reported by the authors recently (Ting et al. (2017). Developed finite element models included material nonlinearities as well as initial geometric imperfections. Axial strength of columns, failure modes, deformed shapes at failure, load-displacements were predicted from the finite element analyses and obtained comparisons with test results showed considerable match. A comprehensive parametric study consisting of 204 models, has been carried out covering a wide range of thickness and slenderness for the considered back-to-back built-up columns. Axial capacities obtained from the numerical study were used to assess the performance of the current AISI& AS/NZS standards when applied for cold-formed back-to-back built up columns; obtained comparisons showed that AISI& AS/NZS standards are un-conservative for stub and short columns sections which were failed by local buckling whereas standards were over-conservative for the strength of intermediate and slender columns which were failed mainly by overall member buckling. en
dc.description.uri https://www.conferenceseries.com/Past_Reports/steel-structures-2017-past en
dc.relation.ispartof 4th International Conference on Advanced Steel Structures en
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. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Nonlinear behaviour of back-to-back built-up cold-formed steel channel columns under compression - finite element modelling and parametric study en
dc.type Conference Item en
dc.rights.holder Copyright: The author en
pubs.finish-date 2017-11-10 en
pubs.start-date 2017-11-09 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Conference Paper en
pubs.elements-id 769140 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2019-04-22 en
pubs.online-publication-date 2017-11-10 en


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