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Easy Trends to Analyse Structural Profiles: Lumped Capacitance Vs Simplified Equation

2020Journal article Open access
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dc.contributor.authorOliveira, Pedro N.
dc.contributor.authorFonseca, Elza M M
dc.contributor.authorCampilho, Raul
dc.date.accessioned2021-09-29T14:44:44Z
dc.date.available2021-09-29T14:44:44Z
dc.date.issued2020
dc.description.abstractThis work presents the calculation of the temperature in different cross-sections of structural profiles (IPE, HEM, L and UAP) using the lumped capacitance method and the simplified equation from Eurocode 3 part 1-2. The lumped capacitance method allows the temperature calculation of the solid body at any time instant during the heat transient process, as a constant and uniform value. The simplified equation from Eurocode 3 part 1-2 is a simple model for heat transfer based on the uniformly distributed temperature over the cross-section surface and directly proportional to section factor of the element. Steel profiles have as almost thermal behaviour uniform during the heat transfer process when submitted to fire conditions and the lumped capacitance method allows a great simplification to estimate the temperature field in the element and may be used when Biot number is lower than unity. Therefore, thermal analysis of solids with high thermal conductivity using this method is adequate. For the studied steel profiles, a thermal analysis was also performed using the simplified equation from the Eurocode 3 part 1-2 in order to validate the obtained results from the lumped capacitance method. The results from both methods are presented for discussion and analysispt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.18280/ijsse.100506pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/18628
dc.language.isoengpt_PT
dc.publisherInternational Information and Engineering Technology Associationpt_PT
dc.relation.publisherversionhttps://www.iieta.org/journals/ijsse/paper/10.18280/ijsse.100506pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectLumped capacitance methodpt_PT
dc.subjectSimplified equationpt_PT
dc.subjectSteel profilespt_PT
dc.subjectHeat transient processpt_PT
dc.subjectFirept_PT
dc.titleEasy Trends to Analyse Structural Profiles: Lumped Capacitance Vs Simplified Equationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage629pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage625pt_PT
oaire.citation.titleInternational Journal of Safety and Security Engineeringpt_PT
oaire.citation.volume10pt_PT
person.familyNameFonseca
person.familyNameCampilho
person.givenNameElza M M
person.givenNameRaul Duarte Salgueiral Gomes
person.identifierR-000-4MB
person.identifier.ciencia-idEB17-92E5-8374
person.identifier.ciencia-id0314-43B9-03D4
person.identifier.orcid0000-0003-1854-6514
person.identifier.orcid0000-0003-4167-4434
person.identifier.ridD-4604-2011
person.identifier.scopus-author-id7102526169
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication9c47bcbc-5c0c-4553-8a0e-b0b1e4ea287f
relation.isAuthorOfPublication4decb370-eb85-4ee1-987f-ec328565ea07
relation.isAuthorOfPublication.latestForDiscovery9c47bcbc-5c0c-4553-8a0e-b0b1e4ea287f

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