Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://repositorio.lnec.pt:8080/jspui/handle/123456789/17358 |
Resumo: | The development of “full plastic hinges” in the most stressed cross-sections is a common hypothesis considered in the elastic–plastic design of steel structures. The equations for the internal forces at the plastic limit state are then based on equilibrium conditions only, and they do not allow the global deformations corresponding to each combination of internal forces at this ultimate limit state to be estimated. This paper presents a simplified analytical model for the elastic–plastic analysis of rectangular hollow sections and bisymmetrical I-sections bent about their strong axis. This model states the relations between the global deformations (axial deformation and bending curvature) and the corresponding internal forces (axial force and bending moment) at the cross-section plastic strain ultimate limit state. It allows a realistic evaluation of the cross-section ductility, based on a relevant strain limitation at the most strained cross-section fibres. |
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Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit stateAnalytical modelElastic-plastic behaviourCross-sectionGlobal deformationInternal forcesPlastic limit stateDuctilityI-shapesRhsThe development of “full plastic hinges” in the most stressed cross-sections is a common hypothesis considered in the elastic–plastic design of steel structures. The equations for the internal forces at the plastic limit state are then based on equilibrium conditions only, and they do not allow the global deformations corresponding to each combination of internal forces at this ultimate limit state to be estimated. This paper presents a simplified analytical model for the elastic–plastic analysis of rectangular hollow sections and bisymmetrical I-sections bent about their strong axis. This model states the relations between the global deformations (axial deformation and bending curvature) and the corresponding internal forces (axial force and bending moment) at the cross-section plastic strain ultimate limit state. It allows a realistic evaluation of the cross-section ductility, based on a relevant strain limitation at the most strained cross-section fibres.ELSEVIER2009-11-25T16:32:43Z2010-04-22T15:21:41Z2014-10-09T14:55:43Z2017-04-13T08:34:03Z2008-01-01T00:00:00Z2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/17358engBaptista, A. M.Muzeau, J. P.info: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:RCAAP2024-01-13T03:03:39Zoai:localhost:123456789/17358Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:56.475071Repositório 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 |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
title |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
spellingShingle |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state Baptista, A. M. Analytical model Elastic-plastic behaviour Cross-section Global deformation Internal forces Plastic limit state Ductility I-shapes Rhs |
title_short |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
title_full |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
title_fullStr |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
title_full_unstemmed |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
title_sort |
Analytical formulation for the deformations of I-shapes and RHS at the plastic strain ultimate limit state |
author |
Baptista, A. M. |
author_facet |
Baptista, A. M. Muzeau, J. P. |
author_role |
author |
author2 |
Muzeau, J. P. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Baptista, A. M. Muzeau, J. P. |
dc.subject.por.fl_str_mv |
Analytical model Elastic-plastic behaviour Cross-section Global deformation Internal forces Plastic limit state Ductility I-shapes Rhs |
topic |
Analytical model Elastic-plastic behaviour Cross-section Global deformation Internal forces Plastic limit state Ductility I-shapes Rhs |
description |
The development of “full plastic hinges” in the most stressed cross-sections is a common hypothesis considered in the elastic–plastic design of steel structures. The equations for the internal forces at the plastic limit state are then based on equilibrium conditions only, and they do not allow the global deformations corresponding to each combination of internal forces at this ultimate limit state to be estimated. This paper presents a simplified analytical model for the elastic–plastic analysis of rectangular hollow sections and bisymmetrical I-sections bent about their strong axis. This model states the relations between the global deformations (axial deformation and bending curvature) and the corresponding internal forces (axial force and bending moment) at the cross-section plastic strain ultimate limit state. It allows a realistic evaluation of the cross-section ductility, based on a relevant strain limitation at the most strained cross-section fibres. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01T00:00:00Z 2008 2009-11-25T16:32:43Z 2010-04-22T15:21:41Z 2014-10-09T14:55:43Z 2017-04-13T08:34:03Z |
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://repositorio.lnec.pt:8080/jspui/handle/123456789/17358 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/17358 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
ELSEVIER |
publisher.none.fl_str_mv |
ELSEVIER |
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 |
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1799136874500980736 |