Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Latin American journal of solids and structures (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000900502 |
Resumo: | Abstract Buckling mode interaction in cold-formed steel (CFS) members must be considered for the structural design, which may lead to a significant reduction of the structural strength, usually recognized as erosion of the limit load. So far, the distortional-global (DG) buckling interaction is not covered by codes, e.g. Brazilian code NBR 14762:2010. The present investigation is aimed at the DG interaction of CFS lipped channel (LC) columns, which is the most usual section. The methodology evolves a parametric analysis, over a single LC column under DG buckling interaction. First, a study of initial geometric imperfection (IGI) sensibility is performed, with the purpose of understanding the influence of the IGI on the column’s behavior. Moreover, the parametric analysis is extended to a set of yielding stress and column lengths, to understand the ultimate load under different types of DG buckling interaction natures. Conclusions on this research have been shown that the actual global buckling equation from the Direct Strength Method is already suitable to cover the DG buckling interaction for the case of lipped channel columns. |
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Latin American journal of solids and structures (Online) |
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Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel ColumnsGlobal-distortional buckling interactioncold-formed steel memberlipped channel columnsdirect strength methodAbstract Buckling mode interaction in cold-formed steel (CFS) members must be considered for the structural design, which may lead to a significant reduction of the structural strength, usually recognized as erosion of the limit load. So far, the distortional-global (DG) buckling interaction is not covered by codes, e.g. Brazilian code NBR 14762:2010. The present investigation is aimed at the DG interaction of CFS lipped channel (LC) columns, which is the most usual section. The methodology evolves a parametric analysis, over a single LC column under DG buckling interaction. First, a study of initial geometric imperfection (IGI) sensibility is performed, with the purpose of understanding the influence of the IGI on the column’s behavior. Moreover, the parametric analysis is extended to a set of yielding stress and column lengths, to understand the ultimate load under different types of DG buckling interaction natures. Conclusions on this research have been shown that the actual global buckling equation from the Direct Strength Method is already suitable to cover the DG buckling interaction for the case of lipped channel columns.Associação Brasileira de Ciências Mecânicas2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000900502Latin American Journal of Solids and Structures v.17 n.9 2020reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78256264info:eu-repo/semantics/openAccessLazzari,João Alfredo deBatista,Eduardo de Mirandaeng2020-12-11T00:00:00Zoai:scielo:S1679-78252020000900502Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1679-7825&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.phpabcm@abcm.org.br||maralves@usp.br1679-78251679-7817opendoar:2020-12-11T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
title |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
spellingShingle |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns Lazzari,João Alfredo de Global-distortional buckling interaction cold-formed steel member lipped channel columns direct strength method |
title_short |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
title_full |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
title_fullStr |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
title_full_unstemmed |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
title_sort |
Distortional-Global Buckling Interaction Relevance in Cold-Formed Steel Lipped Channel Columns |
author |
Lazzari,João Alfredo de |
author_facet |
Lazzari,João Alfredo de Batista,Eduardo de Miranda |
author_role |
author |
author2 |
Batista,Eduardo de Miranda |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Lazzari,João Alfredo de Batista,Eduardo de Miranda |
dc.subject.por.fl_str_mv |
Global-distortional buckling interaction cold-formed steel member lipped channel columns direct strength method |
topic |
Global-distortional buckling interaction cold-formed steel member lipped channel columns direct strength method |
description |
Abstract Buckling mode interaction in cold-formed steel (CFS) members must be considered for the structural design, which may lead to a significant reduction of the structural strength, usually recognized as erosion of the limit load. So far, the distortional-global (DG) buckling interaction is not covered by codes, e.g. Brazilian code NBR 14762:2010. The present investigation is aimed at the DG interaction of CFS lipped channel (LC) columns, which is the most usual section. The methodology evolves a parametric analysis, over a single LC column under DG buckling interaction. First, a study of initial geometric imperfection (IGI) sensibility is performed, with the purpose of understanding the influence of the IGI on the column’s behavior. Moreover, the parametric analysis is extended to a set of yielding stress and column lengths, to understand the ultimate load under different types of DG buckling interaction natures. Conclusions on this research have been shown that the actual global buckling equation from the Direct Strength Method is already suitable to cover the DG buckling interaction for the case of lipped channel columns. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000900502 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000900502 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1679-78256264 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
dc.source.none.fl_str_mv |
Latin American Journal of Solids and Structures v.17 n.9 2020 reponame:Latin American journal of solids and structures (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Latin American journal of solids and structures (Online) |
collection |
Latin American journal of solids and structures (Online) |
repository.name.fl_str_mv |
Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
abcm@abcm.org.br||maralves@usp.br |
_version_ |
1754302890716954624 |