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Modeling the influence of delamination on the mechanical performance of straight glued laminated timber beams

2015-11Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorGaspar, Florindo
dc.contributor.authorCruz, Helena
dc.contributor.authorGomes, Augusto
dc.date.accessioned2025-05-19T15:02:45Z
dc.date.available2025-05-19T15:02:45Z
dc.date.issued2015-11
dc.description.abstractDelamination at the glue lines is a key factor to take into account when assessing glued laminated timber members in service. In order to gain a more objective and wide knowledge about the importance of delamination in relation to its type and extension, a numerical study was developed. Finite element modeling (FEM) was used to evaluate the influence of delamination – near the surface, on the vertical faces and ends – on the mechanic performance of straight glued laminated timber beams. The FEM was validated by comparing stresses and deformations obtained with the model and with the application of the beam theory, showing satisfactory results. Results show that when delamination is non-symmetric regarding the member’s cross section, it can cause the member’s lateral instability, thus increasing its stresses and deformations. Delamination is not a problem when it occurs in members or member areas with low shear stresses, particularly when it is symmetric and does not reach the whole width of the beam. The stresses corresponding to the bending or deformation limit-states get near the elastic limit only for very important delamination. Moreover, delamination depth higher than 60% of the cross section width may be regarded as a turn point beyond which the structural integrity may be at risk.eng
dc.description.sponsorshipFunding text: The authors wish to thank Fundação para a Ciência e a Tecnologia ( Portuguese Foundation for Science and Technology ), for the PhD grant (number SFRH/BD/30310/2006 ) given to Florindo Gaspar.
dc.identifier.citationFlorindo Gaspar, Helena Cruz, Augusto Gomes, Modeling the influence of delamination on the mechanical performance of straight glued laminated timber beams, Construction and Building Materials, Volume 98, 2015, Pages 447-455, ISSN 0950-0618, https://doi.org/10.1016/j.conbuildmat.2015.08.011
dc.identifier.doi10.1016/j.conbuildmat.2015.08.011
dc.identifier.issn0950-0618
dc.identifier.urihttp://hdl.handle.net/10400.8/12931
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationAVALIAÇÃO DA INTEGRIDADE DE ESTRUTURAS DE MADEIRA LAMELADA-COLADA EM SERVIÇO
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0950061815302282
dc.relation.ispartofConstruction and Building Materials
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectGlued laminated timber
dc.subjectDelamination
dc.subjectFinite element models
dc.titleModeling the influence of delamination on the mechanical performance of straight glued laminated timber beamseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAVALIAÇÃO DA INTEGRIDADE DE ESTRUTURAS DE MADEIRA LAMELADA-COLADA EM SERVIÇO
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/PIDDAC/SFRH%2FBD%2F30310%2F2006/PT
oaire.citation.endPage455
oaire.citation.startPage447
oaire.citation.titleConstruction and Building Materials
oaire.citation.volume98
oaire.fundingStreamPIDDAC
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGaspar
person.givenNameFlorindo
person.identifier.ciencia-idB815-2FE8-CFBB
person.identifier.orcid0000-0001-7031-6260
person.identifier.ridO-4760-2016
person.identifier.scopus-author-id26538571900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication71101af5-fd87-4d1a-b448-6d280e57c0b5
relation.isAuthorOfPublication.latestForDiscovery71101af5-fd87-4d1a-b448-6d280e57c0b5
relation.isProjectOfPublication74127480-0f8c-41d9-927d-ed46659b9c32
relation.isProjectOfPublication.latestForDiscovery74127480-0f8c-41d9-927d-ed46659b9c32

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