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Meshless analysis of the stress singularity in composite adhesive joints

2022Journal article Restricted access
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dc.contributor.authorRamalho, L.D.C.
dc.contributor.authorDionísio, J.M.M.
dc.contributor.authorSánchez-Arce, I.J.
dc.contributor.authorCampilho, R.D.S.G.
dc.contributor.authorBelinha, Jorge
dc.date.accessioned2023-01-31T14:39:22Z
dc.date.embargo2035-12-31
dc.date.issued2022
dc.description.abstractAdhesives are an exceptionally well-suited method for joining composites. Unlike other methods, such as bolting or riveting, adhesives do not introduce holes in their joining material. This is a significant advantage in the case of composites because the holes required by bolting or riveting induce stress concentrations and can also lead to tears, burrs or delamination. A point of concern in adhesive joints is the adhesive/adherend interface corner where a stress singularity occurs, and failure usually initiates. Thus, it is crucial to study this stress singularity to better understand adhesive joints’ mechanical behaviour. The goal of this work is to validate the application of the Intensity of Singular Stress Fields (ISSF) criterion to meshless methods, in this case, the Radial Point Interpolation Method (RPIM). With this purpose, eight overlap lengths (LO) in single-lap joints (SLJ) composed of Carbon Fibre Reinforced Polymer (CFRP) and bonded with a brittle adhesive were experimentally and numerically tested. Furthermore, an extrapolation based method is implemented to determine the critical stress singularity components (Hc) necessary for the strength predictions. In the end, the experimental and numerical results are compared to assess the suitability of the method. It was found that the ISSF criterion can be accurately applied to meshless methods and composite materials successfully, given the simplicity of the method applied.pt_PT
dc.description.sponsorshipThis work has been funded by the Ministério da Ciência, Tecnologia e Ensino Superior through the Fundação para a Ciência e a Tecnologia (from Portugal), under project fundings ‘MIT-EXPL/ISF/0084/2017′ , ‘POCI-01–0145-FEDER-028351′ , and ‘SFRH/BD/147628/2019′ . Additionally, the authors acknowledge the funding provided by the Associated Laboratory for Energy, Transports and Aeronautics (LAETA), under project ‘UIDB/50022/2020′ .pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.compstruct.2021.114910pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/22037
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relationPOCI-01–0145-FEDER-028351pt_PT
dc.relationDevelopment of constitutive models and tools for the static and dynamic design of structural adhesive joints
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0263822321013441?via%3Dihubpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectComposite materialspt_PT
dc.subjectISSF criterionpt_PT
dc.subjectRPIMpt_PT
dc.subjectAdhesive jointspt_PT
dc.subjectMeshless methodspt_PT
dc.titleMeshless analysis of the stress singularity in composite adhesive jointspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDevelopment of constitutive models and tools for the static and dynamic design of structural adhesive joints
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5665-PICT/MIT-EXPL%2FISF%2F0084%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F147628%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.citation.startPage114910pt_PT
oaire.citation.titleComposite Structurespt_PT
oaire.citation.volume280pt_PT
oaire.fundingStream5665-PICT
oaire.fundingStreamPOR_NORTE
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCampilho
person.familyNameBelinha
person.givenNameRaul Duarte Salgueiral Gomes
person.givenNameJorge
person.identifier.ciencia-id0314-43B9-03D4
person.identifier.ciencia-id321F-ACEC-5616
person.identifier.orcid0000-0003-4167-4434
person.identifier.orcid0000-0002-0539-7057
person.identifier.ridA-2118-2014
person.identifier.scopus-author-id14022409500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery4decb370-eb85-4ee1-987f-ec328565ea07
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