Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRJ |
Texto Completo: | http://hdl.handle.net/11422/10182 |
Resumo: | The present work reports a numerical analysis investigation about the buckling and post-buckling behavior, ultimate strengthand Direct Strength Method (DSM) design predictions applied to cold formed steel beams with “S” type and lipped channels (plane and stiffened) sections experiencing distortional buckling. The analyzed beams (i) are single-span members, (ii) are simply supported but they exhibit different end support conditions regarding warping and minor-axis flexural rotations and (iii) present different cross-section dimensions and buckling lengths, which provide a wide range of geometrical relations that help understanding their behavior. It is assured that all analyzed beams (i) present “purely” distortional buckling modes and (ii) cover a wide range of yielding stresses, enabling the investigation on a great amount of distortional slenderness. The post-buckling equilibrium paths and ultimate bending moments exhibited in this work are extracted from shell finite element non-linear elastic and elastic-plastic analysis through the software ANSYS. The results obtained in this work evidence that current codified DSM distortional curveis unable to estimate safely and accurately the ultimate bending moments for the selected beams. |
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Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failureVigasPerfis formados a frioEstruturas de açoTensoestruturasFlambagemCNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS METALICASThe present work reports a numerical analysis investigation about the buckling and post-buckling behavior, ultimate strengthand Direct Strength Method (DSM) design predictions applied to cold formed steel beams with “S” type and lipped channels (plane and stiffened) sections experiencing distortional buckling. The analyzed beams (i) are single-span members, (ii) are simply supported but they exhibit different end support conditions regarding warping and minor-axis flexural rotations and (iii) present different cross-section dimensions and buckling lengths, which provide a wide range of geometrical relations that help understanding their behavior. It is assured that all analyzed beams (i) present “purely” distortional buckling modes and (ii) cover a wide range of yielding stresses, enabling the investigation on a great amount of distortional slenderness. The post-buckling equilibrium paths and ultimate bending moments exhibited in this work are extracted from shell finite element non-linear elastic and elastic-plastic analysis through the software ANSYS. The results obtained in this work evidence that current codified DSM distortional curveis unable to estimate safely and accurately the ultimate bending moments for the selected beams.Este trabalho apresenta resultados de uma investigação numérica sobre o comportamento na flambagem, pós-flambagem, resistência última e dimensionamento através do Método da Resistência Direta (MRD) de vigas de perfil formados a frio com seções transversais do tipo “S” e U enrijecido (com e sem enrijecedores intermediários)sob modo de flambagem distorcional. As vigas analisadas (i) são compostas por um único vão, (ii) são simplesmente apoiadas, porém com condições de apoio distintas no que se refere à restrição do empenamento e rotação em torno do eixo de menor inércia em suas extremidades, (iii) têm dimensões de seção transversal e comprimentos de flambagem diversos, que proporcionam uma vasta gama de relações geométricas que auxiliam no entendimento de seu comportamento. Garantiu-se que todas as vigas analisadas (i) apresentassem modo de flambagem “puramente” distorcionais e (ii) abrangessem uma vasta gama de tensões de escoamento, possibilitando a investigação em um grande número de esbeltezes distorcionais. As trajetórias de equilíbrio de pós-flambagem e momentos últimos apresentados neste trabalho são obtidos através de análises não lineares elásticas e elasto-plásticas com emprego de elementos finitos de casca através do programa ANSYS. Os resultados numéricos obtidos neste trabalho indicam, com relação a segurança e precisão, que a atual curva de resistência distorcional do MRD não é capaz de prever adequadamente os momentos últimos das vigas estudadas.Universidade Federal do Rio de JaneiroBrasilInstituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de EngenhariaPrograma de Pós-Graduação em Engenharia CivilUFRJLandesmann, AlexandreCamotim, Dinar Reis ZamithRosa, Luiz Fernando LombaCardoso, Daniel Carlos TaissumBarichello, Carolina2019-10-21T19:20:56Z2023-12-21T03:01:45Z2016-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/11422/10182porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ2023-12-21T03:01:45Zoai:pantheon.ufrj.br:11422/10182Repositório InstitucionalPUBhttp://www.pantheon.ufrj.br/oai/requestpantheon@sibi.ufrj.bropendoar:2023-12-21T03:01:45Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.none.fl_str_mv |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
title |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
spellingShingle |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure Barichello, Carolina Vigas Perfis formados a frio Estruturas de aço Tensoestruturas Flambagem CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS METALICAS |
title_short |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
title_full |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
title_fullStr |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
title_full_unstemmed |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
title_sort |
Behavior and DSM design of cold-formed steel “S" type beams experiencing distortional failure |
author |
Barichello, Carolina |
author_facet |
Barichello, Carolina |
author_role |
author |
dc.contributor.none.fl_str_mv |
Landesmann, Alexandre Camotim, Dinar Reis Zamith Rosa, Luiz Fernando Lomba Cardoso, Daniel Carlos Taissum |
dc.contributor.author.fl_str_mv |
Barichello, Carolina |
dc.subject.por.fl_str_mv |
Vigas Perfis formados a frio Estruturas de aço Tensoestruturas Flambagem CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS METALICAS |
topic |
Vigas Perfis formados a frio Estruturas de aço Tensoestruturas Flambagem CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS METALICAS |
description |
The present work reports a numerical analysis investigation about the buckling and post-buckling behavior, ultimate strengthand Direct Strength Method (DSM) design predictions applied to cold formed steel beams with “S” type and lipped channels (plane and stiffened) sections experiencing distortional buckling. The analyzed beams (i) are single-span members, (ii) are simply supported but they exhibit different end support conditions regarding warping and minor-axis flexural rotations and (iii) present different cross-section dimensions and buckling lengths, which provide a wide range of geometrical relations that help understanding their behavior. It is assured that all analyzed beams (i) present “purely” distortional buckling modes and (ii) cover a wide range of yielding stresses, enabling the investigation on a great amount of distortional slenderness. The post-buckling equilibrium paths and ultimate bending moments exhibited in this work are extracted from shell finite element non-linear elastic and elastic-plastic analysis through the software ANSYS. The results obtained in this work evidence that current codified DSM distortional curveis unable to estimate safely and accurately the ultimate bending moments for the selected beams. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03 2019-10-21T19:20:56Z 2023-12-21T03:01:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/11422/10182 |
url |
http://hdl.handle.net/11422/10182 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal do Rio de Janeiro Brasil Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia Programa de Pós-Graduação em Engenharia Civil UFRJ |
publisher.none.fl_str_mv |
Universidade Federal do Rio de Janeiro Brasil Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia Programa de Pós-Graduação em Engenharia Civil UFRJ |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRJ instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
instname_str |
Universidade Federal do Rio de Janeiro (UFRJ) |
instacron_str |
UFRJ |
institution |
UFRJ |
reponame_str |
Repositório Institucional da UFRJ |
collection |
Repositório Institucional da UFRJ |
repository.name.fl_str_mv |
Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ) |
repository.mail.fl_str_mv |
pantheon@sibi.ufrj.br |
_version_ |
1815455999856738304 |