Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/16096 |
Resumo: | Built-up columns are an interesting alternative when isolated channels do not comply with structural performance requirements. During their lifespan, one of the most common stresses in built-up columns is the compression. Usually, built-up columns are formed by two channels spaced apart, examples being doubled U “back-to-back” or “front to front”. The various possibilities of bracing change the structural behavior to the shear, thus make it difficult to predict the normal resistance force of compression. The American Standard ANSI/AISI S100 (2020) presents an adaptation of the global slenderness for built-up columns, but only considers profiles in contact. Eurocode 3 (2006) distinguishes in elastic analysis, battened and laced built-up columns, but without a specific calculation method for cold-formed profiles. In this context, this work has as main objective to analyze the axial compression resistant capacity of built-up columns in double U section “back-to-back”. Numerical analyzes were carried out in the Ansys software to evaluate the influence of the following geometric parameters on structural behavior: types of bracing, number of battened plates, length of the built-up columns, spacing between channels and thickness of the channels. For each of the models, the normal compressive strength and instability modes were evaluated. In addition, the applicability of normative procedures to predict the resistive force was also evaluated. The results showed that longer built-up columns presented greater increase in the normal resistance force when compared to insulated channels. The increase in the number of battened plates did not show linear variation of the normal resistant force. For battened built-up columns, in most cases analyzed, Eurocode 3 (2006) presented lower resistance values than ANSI/AISI S100 (2020). Lot laced built-up columns Eurocode 3 (2006) underestimated the numerical results for greater thickness. The type of bracing had a greater influence on the models with higher overall slenderness, that is, for greater lengths and closer channels. |
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Nunes, Riterson JacquesNardin, Silvana dehttp://lattes.cnpq.br/5587716781980132Maia, Wanderson Fernandohttp://lattes.cnpq.br/5473998179826262http://lattes.cnpq.br/5697490362140240dd094a72-2a18-4538-9d05-94f6efeb18592022-05-10T11:48:06Z2022-05-10T11:48:06Z2021-10-21NUNES, Riterson Jacques. Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão. 2021. Dissertação (Mestrado em Engenharia Civil) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/16096.https://repositorio.ufscar.br/handle/ufscar/16096Built-up columns are an interesting alternative when isolated channels do not comply with structural performance requirements. During their lifespan, one of the most common stresses in built-up columns is the compression. Usually, built-up columns are formed by two channels spaced apart, examples being doubled U “back-to-back” or “front to front”. The various possibilities of bracing change the structural behavior to the shear, thus make it difficult to predict the normal resistance force of compression. The American Standard ANSI/AISI S100 (2020) presents an adaptation of the global slenderness for built-up columns, but only considers profiles in contact. Eurocode 3 (2006) distinguishes in elastic analysis, battened and laced built-up columns, but without a specific calculation method for cold-formed profiles. In this context, this work has as main objective to analyze the axial compression resistant capacity of built-up columns in double U section “back-to-back”. Numerical analyzes were carried out in the Ansys software to evaluate the influence of the following geometric parameters on structural behavior: types of bracing, number of battened plates, length of the built-up columns, spacing between channels and thickness of the channels. For each of the models, the normal compressive strength and instability modes were evaluated. In addition, the applicability of normative procedures to predict the resistive force was also evaluated. The results showed that longer built-up columns presented greater increase in the normal resistance force when compared to insulated channels. The increase in the number of battened plates did not show linear variation of the normal resistant force. For battened built-up columns, in most cases analyzed, Eurocode 3 (2006) presented lower resistance values than ANSI/AISI S100 (2020). Lot laced built-up columns Eurocode 3 (2006) underestimated the numerical results for greater thickness. The type of bracing had a greater influence on the models with higher overall slenderness, that is, for greater lengths and closer channels.As barras compostas são uma alternativa interessante quando barras isoladas não atendem às necessidades de desempenho estrutural. Durante sua vida útil, um dos esforços mais presentes nas barras compostas é a compressão. Usualmente, as barras compostas são formadas por dois perfis afastados entre si, sendo exemplos os arranjados em duplo U “costa a costa” ou “boca a boca”. Os diferentes tipos de travejamento entre os perfis alteram o comportamento estrutural ao cortante, dificultando assim, a previsão da força normal resistente à compressão da barra composta. A norma americana ANSI/AISI S100 (2020) apresenta uma adaptação da esbeltez global para barras compostas, quando analisado o eixo que mobiliza os travejamentos, porém considera apenas perfis em contato. O Eurocode 3 (2006) distingue, na análise elástica, barras compostas com travejamento em quadro e treliçadas, porém sem método de cálculo específico para perfis formados a frio. Neste contexto, este trabalho teve como objetivo principal analisar a capacidade resistente à compressão axial de barras compostas em seção duplo U “costa a costa”. Foram desenvolvidas análises numéricas no programa Ansys para avaliar a influência dos seguintes parâmetros geométricos no comportamento estrutural: tipos de travejamento, número de chapas separadoras, comprimento da barra composta, espaçamento entre perfis e espessura dos perfis. Para cada um dos modelos foi avaliada a força normal resistente à compressão e os modos de instabilidade. Além disso, também foi avaliada a aplicabilidade de procedimentos normativos para prever a força resistente. Os resultados mostraram que barras compostas mais longas apresentam maior aumento da força normal resistente com a inserção das chapas separadoras horizontais. O aumento do número de chapas separadoras não apresentou variação linear da força normal resistente. Para barras compostas travejadas em quadro, na maioria dos casos analisados, o Eurocode 3 (2006) apresentou menores valores de força resistente que a norma ANSI/AISI S100 (2020). Para travejamento treliçado o Eurocode 3 (2006) subestimou os resultados numéricos para maior espessura. O tipo de travejamento teve maior influência nos modelos de maior esbeltez global, ou seja, para maiores comprimentos e perfis mais próximos.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CAPES: Código de Financiamento 001porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Engenharia Civil - PPGECivUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessBarras compostas de açoPerfis formados a frioCompressãoAnálise numérica não-linearInstabilidadesSteel built-up columnsCold-formed steel membersCompressionNon-linear numerical analysisInstabilitiesENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURASAnálise numérica de barras compostas em perfis de aço formados a frio submetidas à compressãoNumerical analysis of built-up columns in cold formed steel channels submitted to compressioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis60060005f3dea9-bafc-49eb-9de0-5b46379155ecreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/16096/5/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD55ORIGINALDissertação - RITERSON.pdfDissertação - RITERSON.pdfDissertaçãoapplication/pdf5682856https://repositorio.ufscar.br/bitstream/ufscar/16096/3/Disserta%c3%a7%c3%a3o%20-%20RITERSON.pdf25628afe4d1a35aff885f3ad528d375dMD53Carta_Aprovacao Riterson.pdfCarta_Aprovacao Riterson.pdfCarta Aprovaçãoapplication/pdf109875https://repositorio.ufscar.br/bitstream/ufscar/16096/4/Carta_Aprovacao%20Riterson.pdf815c1c0e930e94bac0fa07faafd426aaMD54TEXTDissertação - RITERSON.pdf.txtDissertação - RITERSON.pdf.txtExtracted texttext/plain129860https://repositorio.ufscar.br/bitstream/ufscar/16096/6/Disserta%c3%a7%c3%a3o%20-%20RITERSON.pdf.txte56fdd6f35155b284738466670707e7bMD56Carta_Aprovacao Riterson.pdf.txtCarta_Aprovacao Riterson.pdf.txtExtracted texttext/plain1221https://repositorio.ufscar.br/bitstream/ufscar/16096/8/Carta_Aprovacao%20Riterson.pdf.txt2f72cbd0b67c9d701ab066ad4ad25434MD58THUMBNAILDissertação - RITERSON.pdf.jpgDissertação - RITERSON.pdf.jpgIM Thumbnailimage/jpeg7662https://repositorio.ufscar.br/bitstream/ufscar/16096/7/Disserta%c3%a7%c3%a3o%20-%20RITERSON.pdf.jpg5a0e29d41cb5a12f5c8be8bf8095a7c2MD57Carta_Aprovacao Riterson.pdf.jpgCarta_Aprovacao Riterson.pdf.jpgIM Thumbnailimage/jpeg13513https://repositorio.ufscar.br/bitstream/ufscar/16096/9/Carta_Aprovacao%20Riterson.pdf.jpg82c5ac3c183660ba27ad7f97fef84060MD59ufscar/160962023-09-18 18:32:27.477oai:repositorio.ufscar.br:ufscar/16096Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:32:27Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
dc.title.alternative.eng.fl_str_mv |
Numerical analysis of built-up columns in cold formed steel channels submitted to compression |
title |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
spellingShingle |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão Nunes, Riterson Jacques Barras compostas de aço Perfis formados a frio Compressão Análise numérica não-linear Instabilidades Steel built-up columns Cold-formed steel members Compression Non-linear numerical analysis Instabilities ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS |
title_short |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
title_full |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
title_fullStr |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
title_full_unstemmed |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
title_sort |
Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão |
author |
Nunes, Riterson Jacques |
author_facet |
Nunes, Riterson Jacques |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/5697490362140240 |
dc.contributor.author.fl_str_mv |
Nunes, Riterson Jacques |
dc.contributor.advisor1.fl_str_mv |
Nardin, Silvana de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5587716781980132 |
dc.contributor.advisor-co1.fl_str_mv |
Maia, Wanderson Fernando |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5473998179826262 |
dc.contributor.authorID.fl_str_mv |
dd094a72-2a18-4538-9d05-94f6efeb1859 |
contributor_str_mv |
Nardin, Silvana de Maia, Wanderson Fernando |
dc.subject.por.fl_str_mv |
Barras compostas de aço Perfis formados a frio Compressão Análise numérica não-linear Instabilidades |
topic |
Barras compostas de aço Perfis formados a frio Compressão Análise numérica não-linear Instabilidades Steel built-up columns Cold-formed steel members Compression Non-linear numerical analysis Instabilities ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS |
dc.subject.eng.fl_str_mv |
Steel built-up columns Cold-formed steel members Compression Non-linear numerical analysis Instabilities |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS |
description |
Built-up columns are an interesting alternative when isolated channels do not comply with structural performance requirements. During their lifespan, one of the most common stresses in built-up columns is the compression. Usually, built-up columns are formed by two channels spaced apart, examples being doubled U “back-to-back” or “front to front”. The various possibilities of bracing change the structural behavior to the shear, thus make it difficult to predict the normal resistance force of compression. The American Standard ANSI/AISI S100 (2020) presents an adaptation of the global slenderness for built-up columns, but only considers profiles in contact. Eurocode 3 (2006) distinguishes in elastic analysis, battened and laced built-up columns, but without a specific calculation method for cold-formed profiles. In this context, this work has as main objective to analyze the axial compression resistant capacity of built-up columns in double U section “back-to-back”. Numerical analyzes were carried out in the Ansys software to evaluate the influence of the following geometric parameters on structural behavior: types of bracing, number of battened plates, length of the built-up columns, spacing between channels and thickness of the channels. For each of the models, the normal compressive strength and instability modes were evaluated. In addition, the applicability of normative procedures to predict the resistive force was also evaluated. The results showed that longer built-up columns presented greater increase in the normal resistance force when compared to insulated channels. The increase in the number of battened plates did not show linear variation of the normal resistant force. For battened built-up columns, in most cases analyzed, Eurocode 3 (2006) presented lower resistance values than ANSI/AISI S100 (2020). Lot laced built-up columns Eurocode 3 (2006) underestimated the numerical results for greater thickness. The type of bracing had a greater influence on the models with higher overall slenderness, that is, for greater lengths and closer channels. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-10-21 |
dc.date.accessioned.fl_str_mv |
2022-05-10T11:48:06Z |
dc.date.available.fl_str_mv |
2022-05-10T11:48:06Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
NUNES, Riterson Jacques. Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão. 2021. Dissertação (Mestrado em Engenharia Civil) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/16096. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/16096 |
identifier_str_mv |
NUNES, Riterson Jacques. Análise numérica de barras compostas em perfis de aço formados a frio submetidas à compressão. 2021. Dissertação (Mestrado em Engenharia Civil) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/16096. |
url |
https://repositorio.ufscar.br/handle/ufscar/16096 |
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por |
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600 600 |
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05f3dea9-bafc-49eb-9de0-5b46379155ec |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
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openAccess |
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Universidade Federal de São Carlos Câmpus São Carlos |
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Programa de Pós-Graduação em Engenharia Civil - PPGECiv |
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UFSCar |
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Universidade Federal de São Carlos Câmpus São Carlos |
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