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Multiobjective optimization of cold-formed steel columns

2015-11Journal article Restricted access
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dc.contributor.authorMadeira, JFA
dc.contributor.authorDias, Joaquim
dc.contributor.authorSilvestre, Nuno
dc.date.accessioned2016-04-15T11:24:00Z
dc.date.available2016-04-15T11:24:00Z
dc.date.issued2015-11
dc.description.abstractThe optimal design of cold-formed steel columns is addressed in this paper, with two objectives: maximize the local-global buckling strength and maximize the distortional buckling strength. The design variables of the problem are the angles of orientation of cross-section wall elements the thickness and width of the steel sheet that forms the cross-section are fixed. The elastic local, distortional and global buckling loads are determined using Finite Strip Method (CUFSM) and the strength of cold-formed steel columns (with given length) is calculated using the Direct Strength Method (DSM). The bi-objective optimization problem is solved using the Direct MultiSearch (DMS) method, which does not use any derivatives of the objective functions. Trade-off Pareto optimal fronts are obtained separately for symmetric and anti-symmetric cross-section shapes. The results are analyzed and further discussed, and some interesting conclusions about the individual strengths (local-global and distortional) are found.pt_PT
dc.identifier.citationMADEIRA, J.F.A.; Dias,JOAQUIM; SILVESTRE,NUNO; - Multiobjective optimization of cold-formed steel columns. Thin-Walled Structures. ISSN. 0263-8231. Vol. 96 (2015), pp. 29-38.pt_PT
dc.identifier.doi10.1016/j.tws.2015.07.025pt_PT
dc.identifier.issn0263-8231
dc.identifier.issn1879-3223
dc.identifier.urihttp://hdl.handle.net/10400.21/5994
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherELSEVIER SCI LTDpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0263823115300513pt_PT
dc.subjectMultiobjective optimizationpt_PT
dc.subjectCold-formed steelpt_PT
dc.subjectMaximum strengthpt_PT
dc.subjectLocal bucklingpt_PT
dc.subjectGlobal (flexural) bucklingpt_PT
dc.subjectDistortional bucklingpt_PT
dc.titleMultiobjective optimization of cold-formed steel columnspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F50022%2F2013/PT
oaire.citation.endPage38pt_PT
oaire.citation.startPage29pt_PT
oaire.citation.volume96pt_PT
oaire.fundingStream5876
person.familyNameMadeira
person.givenNameJose Firmino Aguilar
person.identifier.ciencia-id6F1E-DCF0-D6EC
person.identifier.orcid0000-0001-9523-3808
person.identifier.ridN-6918-2016
person.identifier.scopus-author-id7003405549
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd495619a-a6ab-4ff5-8e70-3a1351f934dc
relation.isAuthorOfPublication.latestForDiscoveryd495619a-a6ab-4ff5-8e70-3a1351f934dc
relation.isProjectOfPublicationc26dd8c5-b8c9-4ac6-8579-78539a14c943
relation.isProjectOfPublication.latestForDiscoveryc26dd8c5-b8c9-4ac6-8579-78539a14c943

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