Multiobjective optimization of cold-formed steel columns

Detalhes bibliográficos
Autor(a) principal: Madeira, JFA
Data de Publicação: 2015
Outros Autores: Dias, Joaquim, Silvestre, Nuno
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/5994
Resumo: The 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.
id RCAP_b61382e046ef3f5ecd9e72de6d3cb1d4
oai_identifier_str oai:repositorio.ipl.pt:10400.21/5994
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Multiobjective optimization of cold-formed steel columnsMultiobjective optimizationCold-formed steelMaximum strengthLocal bucklingGlobal (flexural) bucklingDistortional bucklingThe 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.ELSEVIER SCI LTDRCIPLMadeira, JFADias, JoaquimSilvestre, Nuno2016-04-15T11:24:00Z2015-112015-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/5994engMADEIRA, J.F.A.; Dias,JOAQUIM; SILVESTRE,NUNO; - Multiobjective optimization of cold-formed steel columns. Thin-Walled Structures. ISSN. 0263-8231. Vol. 96 (2015), pp. 29-38.0263-823110.1016/j.tws.2015.07.025metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:50:13Zoai:repositorio.ipl.pt:10400.21/5994Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:15:12.526808Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Multiobjective optimization of cold-formed steel columns
title Multiobjective optimization of cold-formed steel columns
spellingShingle Multiobjective optimization of cold-formed steel columns
Madeira, JFA
Multiobjective optimization
Cold-formed steel
Maximum strength
Local buckling
Global (flexural) buckling
Distortional buckling
title_short Multiobjective optimization of cold-formed steel columns
title_full Multiobjective optimization of cold-formed steel columns
title_fullStr Multiobjective optimization of cold-formed steel columns
title_full_unstemmed Multiobjective optimization of cold-formed steel columns
title_sort Multiobjective optimization of cold-formed steel columns
author Madeira, JFA
author_facet Madeira, JFA
Dias, Joaquim
Silvestre, Nuno
author_role author
author2 Dias, Joaquim
Silvestre, Nuno
author2_role author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Madeira, JFA
Dias, Joaquim
Silvestre, Nuno
dc.subject.por.fl_str_mv Multiobjective optimization
Cold-formed steel
Maximum strength
Local buckling
Global (flexural) buckling
Distortional buckling
topic Multiobjective optimization
Cold-formed steel
Maximum strength
Local buckling
Global (flexural) buckling
Distortional buckling
description The 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.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
2015-11-01T00:00:00Z
2016-04-15T11:24:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/5994
url http://hdl.handle.net/10400.21/5994
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MADEIRA, 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.
0263-8231
10.1016/j.tws.2015.07.025
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ELSEVIER SCI LTD
publisher.none.fl_str_mv ELSEVIER SCI LTD
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133409817133056

Registros relacionados