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Characterization of shear strain on PDMS: numerical and experimental approaches

2020Journal article Open access
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dc.contributor.authorSouza, Andrews
dc.contributor.authorMarques, Eduardo do Carmo
dc.contributor.authorBalsa, Carlos
dc.contributor.authorRibeiro, J.E.
dc.date.accessioned2018-02-19T10:00:00Z
dc.date.accessioned2020-06-22T10:18:22Z
dc.date.available2018-01-19T10:00:00Z
dc.date.available2020-06-22T10:18:22Z
dc.date.issued2020
dc.description.abstractPolydimethylsiloxane (PDMS) is one of the most popular elastomers and has been used in di erent fields, especially in biomechanics research. Among the many interesting features of this material, its hyperelastic behavior stands out, which allows the use of PDMS in various applications, like the ones that mimic soft tissues. However, the hyperelastic behavior is not linear and needs detailed analysis, especially the characterization of shear strain. In this work, two approaches, numerical and experimental, were proposed to characterize the e ect of shear strain on PDMS. The experimental method was implemented as a simple shear testing associated with 3D digital image correlation and was made using two specimens with two thicknesses of PDMS (2 and 4 mm). A finite element software was used to implement the numerical simulations, in which four di erent simulations using the Mooney–Rivlin, Yeoh, Gent, and polynomial hyperelastic constitutive models were performed. These approaches showed that the maximum value of shear strain occurred in the central region of the PDMS, and higher values emerged for the 2 mm PDMS thickness. Qualitatively, in the central area of the specimen, the numerical and experimental results have similar behaviors and the values of shear strain are close. For higher values of displacement and thicknesses, the numerical simulation results move further away from experimental values.
dc.description.sponsorshipThis work has been supported by FCT – Fundação para a Ciência e Tecnologia within the R&D Units Project Scope: CIMO UIDB/00690/2020
dc.description.versioninfo:eu-repo/semantics/publishedVersionen_EN
dc.identifier.citationSouza, Andrews; Marques, Eduardo; Balsa, Carlos; Ribeiro, João (2020). Characterization of shear strain on PDMS: Numerical and experimental approaches. Applied Sciences. ISSN 2076-3417. 10:9, p. 1-15en_EN
dc.identifier.doi10.3390/app10093322en_EN
dc.identifier.urihttp://hdl.handle.net/10198/22295
dc.language.isoeng
dc.peerreviewedyesen_EN
dc.subject3D digital image correlationen_EN
dc.subjectFinite element methoden_EN
dc.subjectHyperelastic constitutive modelsen_EN
dc.subjectHyperelasticityen_EN
dc.subjectNumerical simulationen_EN
dc.subjectPolydimethylsiloxaneen_EN
dc.subjectShear strainen_EN
dc.titleCharacterization of shear strain on PDMS: numerical and experimental approachesen_EN
dc.typejournal article
dspace.entity.typePublication
person.familyNameSouza
person.familyNameBalsa
person.familyNameRibeiro
person.givenNameAndrews
person.givenNameCarlos
person.givenNameJ.E.
person.identifier1721518
person.identifierR-000-6Y8
person.identifier.ciencia-idD81A-5D25-86CD
person.identifier.ciencia-idDE1E-2F7A-AAB1
person.identifier.ciencia-id0F15-FB62-29DB
person.identifier.orcid0000-0003-2431-8665
person.identifier.orcid0000-0001-6300-148X
person.identifier.ridM-8735-2013
person.identifier.ridG-3839-2018
person.identifier.scopus-author-id23391719100
person.identifier.scopus-author-id25638652400
rcaap.rightsopenAccessen_EN
rcaap.typearticleen_EN
relation.isAuthorOfPublicationb9a2c0e7-74fc-424e-bc40-ebf23c4bafbe
relation.isAuthorOfPublicationd0e5ccff-9696-4f4f-9567-8d698a6bf17d
relation.isAuthorOfPublicationc90169e6-7889-4270-a096-35b98c75f9f9
relation.isAuthorOfPublication.latestForDiscoveryc90169e6-7889-4270-a096-35b98c75f9f9

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