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Stress Concentration on PDMS: An evaluation of three numerical constitutive models using digital image correlation

2023Journal article Open access
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dc.contributor.authorSales, Flaminio
dc.contributor.authorSouza, Andrews
dc.contributor.authorOliveira, Fallconny Rodrigues Sensato
dc.contributor.authorLima, Rui A.
dc.contributor.authorRibeiro, J.E.
dc.date.accessioned2023-12-18T09:52:22Z
dc.date.available2023-12-18T09:52:22Z
dc.date.issued2023
dc.description.abstractThe examination of hyperelastic materials’ behavior, such as polydimethylsiloxane (PDMS), is crucial for applications in areas as biomedicine and electronics. However, the limitations of hyperelastic models for specific stress scenarios, with stress concentration, are not well explored on the literature. To address this, firstly, three constitutive models were evaluated (Neo-Hookean, Mooney-Rivlin, and Ogden) using numerical simulations and Digital Image Correlation (DIC) analysis during a uniaxial tensile test. The samples were made of PDMS with stress concentration geometries (center holes, shoulder fillets, and edge notches). Results of ANOVA analysis showed that any of the three models can be chosen for numerical analysis of PDMS since no significant differences in suitability were found. Finally, the Ogen model was chosen to obtain the stress concentration factors for these geometries, a property which characterize how discontinuities change the maximum stress supported by an element. Our study provides new values for variables needed to analyze and design hyperelastic elements and produce a foundation for understanding PDMS stress-strain behavior.pt_PT
dc.description.sponsorshipThe authors acknowledge the projects EXPL/EME-EME/0732/2021 and 2022.06207.PTDC for the financial support, through national funds (OE), within the scope of the Scientific Research and Technological Development Projects (IC&DT) program in all scientific domains (PTDC), PORTUGAL 2020 Partnership Agreement, European Regional Development Fund (FEDER), via the Foundation for Science and Technology, I.P. (FCT, I.P) and the R&D Units projects (UIDB/00690/2020 and UIDP/00690/2020) (CIMO), SusTEC (LA/P/0007/2020), UIDB/ 04077/2020, UIDP/04077/2020, UIDB/04436/2020 and UIDB/00532/ 2020. Andrews Souza acknowledges FCT for the Ph.D. scholarship 2021.07961.BD.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSales, Flaminio C.P.; Souza, Andrews; Oliveira, Fallconny Rodrigues Sensato; Lima, Rui A.; Ribeiro, J.E. (2023). Stress Concentration on PDMS: An evaluation of three numerical constitutive models using digital image correlation. Journal of the Mechanical Behavior of Biomedical Materials. ISSN 1751-6161. 148, p. 1-14pt_PT
dc.identifier.doi10.1016/j.jmbbm.2023.106164pt_PT
dc.identifier.issn1751-6161
dc.identifier.urihttp://hdl.handle.net/10198/28955
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationMicroelectromechanical Systems Research Unit
dc.relationTransport Phenomena Research Center
dc.relationi9Models: Development of innovative in vitro models to study the wall deformability and blood flow in aneurysms.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectHyperelastic modelspt_PT
dc.subjectStress concentration factorpt_PT
dc.subjectPDMSpt_PT
dc.subjectTensile testspt_PT
dc.subjectDICpt_PT
dc.titleStress Concentration on PDMS: An evaluation of three numerical constitutive models using digital image correlationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardTitleMicroelectromechanical Systems Research Unit
oaire.awardTitleTransport Phenomena Research Center
oaire.awardTitlei9Models: Development of innovative in vitro models to study the wall deformability and blood flow in aneurysms.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04436%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00532%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/2021.07961.BD/PT
oaire.citation.endPage14pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of the Mechanical Behavior of Biomedical Materialspt_PT
oaire.citation.volume148pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_NORTE
person.familyNameSales
person.familyNameSouza
person.familyNameRibeiro
person.givenNameFlaminio
person.givenNameAndrews
person.givenNameJ.E.
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person.identifier.ciencia-id0F15-FB62-29DB
person.identifier.orcid0000-0003-2042-0830
person.identifier.orcid0000-0001-6300-148X
person.identifier.ridG-3839-2018
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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