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Insights into the viscohyperelastic response of soft magnetorheological elastomers: Competition of macrostructural versus microstructural players

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dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Dinámica y Fractura de Elementos Estructuraleses
dc.contributor.authorLucarini San José, Sergio
dc.contributor.authorMoreno Mateos, Miguel Ángel
dc.contributor.authorDanas, Konstantinos
dc.contributor.authorGarcía González, Daniel
dc.contributor.funderComunidad de Madrides
dc.contributor.funderEuropean Commissionen
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.date.accessioned2023-02-20T12:45:23Z
dc.date.available2023-02-20T12:45:23Z
dc.date.issued2022-12-01
dc.description.abstractMagnetorheological elastomers (MREs) are multifunctional composites that consist of an elastomeric matrix filled with magnetic particles. These materials respond to an external magnetic field by mechanically deforming and/or changing their magnetorheological properties. Such a multi-physical response has made them extraordinary candidates for a wide variety of applications in soft robotics and bioengineering. However, there are still some gaps of knowledge that prevent the optimal design and application of these MREs. In this regard, the effect of viscoelastic mechanisms remains elusive from a microstructural perspective. To the best of the authors' knowledge, this work provides for the first time a numerical homogenization analysis for various magneto-active microstructures accounting for viscous deformation mechanisms. To this end, we propose an incremental variational formulation that incorporates viscoelasticity via internal variables, which is properly modified to deal with the continuity of Maxwell stresses. The proposed framework is applied to study the magneto-mechanical couplings in extremely soft MREs (stiffness 10 kPa). Such a soft matrix promotes microstructural rearrangements while transmitting internal forces leading to macrostructural synergistic responses. The constitutive parameters are calibrated with experimental tests. The numerical results are accompanied with original magnetostriction tests considering different sample geometries and confined magneto-mechanical tests, reporting the macroscopic response. The results obtained in this work suggest that the effective magneto-mechanical response of the MRE is the outcome of a competition between macrostructural and local microstructural responses, where viscous mechanisms play a relevant role.en
dc.description.sponsorshipSL, MAMM and DGG acknowledge support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No. 947723, project: 4D-BIOMAP). KD acknowledge support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 636903 - MAGNETO). DGG acknowledges support from the Talent Attraction grant (CM 2018 - 2018-T2/IND-9992) from the Comunidad de Madrid and MAMM acknowledges support from the Ministerio de Ciencia, Innovacion y Universidades, Spain (FPU19/03874).en
dc.format.extent16
dc.identifier.bibliographicCitationLucarini, S., Moreno-Mateos, M., Danas, K. & Garcia-Gonzalez, D. (2022). Insights into the viscohyperelastic response of soft magnetorheological elastomers: Competition of macrostructural versus microstructural players. International Journal of Solids and Structures, 256, 111981.en
dc.identifier.doihttps://doi.org/10.1016/j.ijsolstr.2022.111981
dc.identifier.issn0020-7683
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue111981
dc.identifier.publicationlastpage16
dc.identifier.publicationtitleInternational Journal of Solids and Structuresen
dc.identifier.publicationvolume256
dc.identifier.urihttps://hdl.handle.net/10016/36614
dc.identifier.uxxiAR/0000031175
dc.language.isoeng
dc.publisherElsevieren
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/947723
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/636903
dc.relation.projectIDComunidad de Madrid. 2018-T2/IND-9992es
dc.relation.projectIDGobierno de España. FPU19/03874es
dc.relation.projectIDAT-2022
dc.rights© 2022 The Author(s).en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaBiología y Biomedicinaes
dc.subject.ecienciaFísicaes
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaRobótica e Informática Industriales
dc.subject.otherMagnetorheological elastomer (MRE)en
dc.subject.otherConstitutive modelingen
dc.subject.otherMultifunctional compositesen
dc.subject.otherViscoelasticityen
dc.subject.otherMicrostructural homogenizationen
dc.titleInsights into the viscohyperelastic response of soft magnetorheological elastomers: Competition of macrostructural versus microstructural playersen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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