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dc.contributor.authorWang, Bin
dc.contributor.authorGilbert, Benoit P
dc.contributor.authorMolinier, Adrien M
dc.contributor.authorGuan, Hong
dc.contributor.authorTeh, Lip H
dc.date.accessioned2018-08-14T02:47:48Z
dc.date.available2018-08-14T02:47:48Z
dc.date.issued2016
dc.identifier.issn0263-8231
dc.identifier.doi10.1016/j.tws.2016.04.015
dc.identifier.urihttp://hdl.handle.net/10072/142649
dc.description.abstractThis paper introduces manufacturing constraints into a recently developed evolutionary algorithm for shape optimisation of CFS profiles. The algorithm is referred to as “self-shape optimisation” and uses Genetic Algorithm (GA) together with the Augmented Lagrangian (AL) method to avoid ill-conditioned problems. Simple manufacturing rules derived from the limitations of current cold-forming processes, i.e. a limited ability to form continuously curved surfaces without discrete bends, are described in the paper and incorporated into the algorithm. The Hough transform is used to detect straight lines and transform arbitrarily drawn cross-sections into manufacturable ones. Firstly, the algorithm is verified against a known optimisation problem and found to accurately converge to a manufacturable optimum solution. Secondly, the algorithm is applied to singly-symmetric CFS columns each of which is subject to an axial compressive load of 75kN and has a uniform wall thickness of 1.2 mm. The strength of the columns is evaluated by the Direct Strength Method (DSM) and all buckling modes are considered. Various column lengths (from 500 mm to 3000 mm) and numbers of roll-forming bends were investigated. The optimised cross-sections are presented and discussed.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom75
dc.relation.ispartofpageto92
dc.relation.ispartofjournalThin-Walled Structures
dc.relation.ispartofvolume106
dc.subject.fieldofresearchCivil Engineering not elsewhere classified
dc.subject.fieldofresearchAerospace Engineering
dc.subject.fieldofresearchCivil Engineering
dc.subject.fieldofresearchMechanical Engineering
dc.subject.fieldofresearchcode090599
dc.subject.fieldofresearchcode0901
dc.subject.fieldofresearchcode0905
dc.subject.fieldofresearchcode0913
dc.titleShape optimisation of cold-formed steel columns with manufacturing constraints using the Hough transform
dc.typeJournal article
dc.type.descriptionC2 - Articles (Other)
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionAccepted Manuscript (AM)
gro.facultyGriffith Sciences, School of Engineering and Built Environment
gro.rights.copyright© 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorGuan, Hong
gro.griffith.authorWang, Bin
gro.griffith.authorGilbert, Benoit
gro.griffith.authorMolinier, Adrien


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