Bending resistance of austenitic stainless steel hollow sections at elevated temperatures

Detalhes bibliográficos
Autor(a) principal: Piloto, P.A.G.
Data de Publicação: 2024
Outros Autores: Mesquita, L.M.R., Cruz, Áureo A.T., Lopes, Nuno, Arrais, Flávio, Real, Paulo Vila
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/29304
Resumo: The present research aims to increase the knowledge of the structural behaviour of stainless steel members under fire. Eight experimental bending tests at elevated temperatures (500, 700 ºC) built with RHS 150×100×3 austenitic stainless-steel beams, using two different grades (1.4301, 1.4571) also known as 304 and 316Ti, are presented. Both grades 1.4301 (X5CrNi18–10) and 1.4571 (X6CrNiMo17–12–2) have almost the same core chemical composition but there are some differences, especially the grade 1.4571 has 2–2.5% molybdenum and a small amount of titanium (less than 0.7%). Grade 1.4301 presents good rust resistance, sufficient acid resistance and good weldability, while grade 1.4571 presents very good rust resistance, very good acid resistance and also good weldability. Both have almost the same strength, but grade 1.4571 has superior strength at elevated temperatures. Both material grades were experimentally characterised with coupon tensile tests at room temperature. The load-displacement behaviour is validated with 3D shell finite element models, assuming a true stress-strain material model, based on the two-stage Ramberg Osgood constitutive law. With the developed numerical model, a parametric analysis is presented to study the fire resistance of beams from both materials, using three different cross-sections and eleven different temperatures. The bending resistance obtained with the finite element model is in good agreement with the cross-sectional design moment resistance, when considering the effective area, confirming that the design rules from EN1993–1–2 are safe for less slender cross-sections and unsafe for the most slender cross-sections.
id RCAP_aeec1eefe38aca32f82f3abe910be169
oai_identifier_str oai:bibliotecadigital.ipb.pt:10198/29304
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Bending resistance of austenitic stainless steel hollow sections at elevated temperaturesStainless steel beamsFireElevated temperaturesBending resistanceExperimental investigationNumerical investigationThe present research aims to increase the knowledge of the structural behaviour of stainless steel members under fire. Eight experimental bending tests at elevated temperatures (500, 700 ºC) built with RHS 150×100×3 austenitic stainless-steel beams, using two different grades (1.4301, 1.4571) also known as 304 and 316Ti, are presented. Both grades 1.4301 (X5CrNi18–10) and 1.4571 (X6CrNiMo17–12–2) have almost the same core chemical composition but there are some differences, especially the grade 1.4571 has 2–2.5% molybdenum and a small amount of titanium (less than 0.7%). Grade 1.4301 presents good rust resistance, sufficient acid resistance and good weldability, while grade 1.4571 presents very good rust resistance, very good acid resistance and also good weldability. Both have almost the same strength, but grade 1.4571 has superior strength at elevated temperatures. Both material grades were experimentally characterised with coupon tensile tests at room temperature. The load-displacement behaviour is validated with 3D shell finite element models, assuming a true stress-strain material model, based on the two-stage Ramberg Osgood constitutive law. With the developed numerical model, a parametric analysis is presented to study the fire resistance of beams from both materials, using three different cross-sections and eleven different temperatures. The bending resistance obtained with the finite element model is in good agreement with the cross-sectional design moment resistance, when considering the effective area, confirming that the design rules from EN1993–1–2 are safe for less slender cross-sections and unsafe for the most slender cross-sections.ElsevierBiblioteca Digital do IPBPiloto, P.A.G.Mesquita, L.M.R.Cruz, Áureo A.T.Lopes, NunoArrais, FlávioReal, Paulo Vila2024-01-24T09:23:46Z20242024-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/29304engPiloto, P.A.G.; Mesquita, L.M.R.; Cruz, Áureo A.T.; Lopes, Nuno; Arrais, Flávio; Real, Paulo Vila (2024). Bending resistance of austenitic stainless steel hollow sections at elevated temperatures. Structures. eISSN 2352-0124. 59, p. 1-1010.1016/j.istruc.2023.1056902352-0124info: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:RCAAP2024-01-31T01:19:43Zoai:bibliotecadigital.ipb.pt:10198/29304Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:58:58.563930Repositório 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 Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
title Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
spellingShingle Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
Piloto, P.A.G.
Stainless steel beams
Fire
Elevated temperatures
Bending resistance
Experimental investigation
Numerical investigation
title_short Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
title_full Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
title_fullStr Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
title_full_unstemmed Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
title_sort Bending resistance of austenitic stainless steel hollow sections at elevated temperatures
author Piloto, P.A.G.
author_facet Piloto, P.A.G.
Mesquita, L.M.R.
Cruz, Áureo A.T.
Lopes, Nuno
Arrais, Flávio
Real, Paulo Vila
author_role author
author2 Mesquita, L.M.R.
Cruz, Áureo A.T.
Lopes, Nuno
Arrais, Flávio
Real, Paulo Vila
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Piloto, P.A.G.
Mesquita, L.M.R.
Cruz, Áureo A.T.
Lopes, Nuno
Arrais, Flávio
Real, Paulo Vila
dc.subject.por.fl_str_mv Stainless steel beams
Fire
Elevated temperatures
Bending resistance
Experimental investigation
Numerical investigation
topic Stainless steel beams
Fire
Elevated temperatures
Bending resistance
Experimental investigation
Numerical investigation
description The present research aims to increase the knowledge of the structural behaviour of stainless steel members under fire. Eight experimental bending tests at elevated temperatures (500, 700 ºC) built with RHS 150×100×3 austenitic stainless-steel beams, using two different grades (1.4301, 1.4571) also known as 304 and 316Ti, are presented. Both grades 1.4301 (X5CrNi18–10) and 1.4571 (X6CrNiMo17–12–2) have almost the same core chemical composition but there are some differences, especially the grade 1.4571 has 2–2.5% molybdenum and a small amount of titanium (less than 0.7%). Grade 1.4301 presents good rust resistance, sufficient acid resistance and good weldability, while grade 1.4571 presents very good rust resistance, very good acid resistance and also good weldability. Both have almost the same strength, but grade 1.4571 has superior strength at elevated temperatures. Both material grades were experimentally characterised with coupon tensile tests at room temperature. The load-displacement behaviour is validated with 3D shell finite element models, assuming a true stress-strain material model, based on the two-stage Ramberg Osgood constitutive law. With the developed numerical model, a parametric analysis is presented to study the fire resistance of beams from both materials, using three different cross-sections and eleven different temperatures. The bending resistance obtained with the finite element model is in good agreement with the cross-sectional design moment resistance, when considering the effective area, confirming that the design rules from EN1993–1–2 are safe for less slender cross-sections and unsafe for the most slender cross-sections.
publishDate 2024
dc.date.none.fl_str_mv 2024-01-24T09:23:46Z
2024
2024-01-01T00:00:00Z
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/10198/29304
url http://hdl.handle.net/10198/29304
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Piloto, P.A.G.; Mesquita, L.M.R.; Cruz, Áureo A.T.; Lopes, Nuno; Arrais, Flávio; Real, Paulo Vila (2024). Bending resistance of austenitic stainless steel hollow sections at elevated temperatures. Structures. eISSN 2352-0124. 59, p. 1-10
10.1016/j.istruc.2023.105690
2352-0124
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
_version_ 1799137074185502720