Dynamic hysteresis in the rheology of complex fluids

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorPuisto, Antti
dc.contributor.authorMohtaschemi, Mikael
dc.contributor.authorAlava, Mikko J.
dc.contributor.authorIlla, Xavier
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-11-26T10:02:44Z
dc.date.available2015-11-26T10:02:44Z
dc.date.issued2015
dc.description.abstractRecently, rheological hysteresis has been studied systematically in a wide range of complex fluids combining global rheology and time-resolved velocimetry. In this paper we present an analysis of the roles of the three most fundamental mechanisms in simple-yield-stress fluids: structure dynamics, viscoelastic response, and spatial flow heterogeneities, i.e., time-dependent shear bands. Dynamical hysteresis simulations are done analogously to rheological ramp-up and -down experiments on a coupled model which incorporates viscoelasticity and time-dependent structure evolution. Based on experimental data, a coupling between hysteresis measured from the local velocity profiles and that measured from the global flow curve has been suggested. According to the present model, even if transient shear banding appears during the shear ramps, in typical narrow-gap devices, only a small part of the hysteretic response can be attributed to heterogeneous flow. This results in decoupling of the hysteresis measured from the local velocity profiles and the global flow curve, demonstrating that for an arbitrary time-dependent rheological response this proposed coupling can be very weak.en
dc.description.versionPeer revieweden
dc.format.extent042314/1-8
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPuisto, Antti & Mohtaschemi, Mikael & Alava, Mikko J. & Illa, Xavier. 2015. Dynamic hysteresis in the rheology of complex fluids. Physical Review E. Volume 91, Issue 4. 042314/1-8. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.91.042314.en
dc.identifier.doi10.1103/physreve.91.042314
dc.identifier.issn1539-3755 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/18816
dc.identifier.urnURN:NBN:fi:aalto-201511265326
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Een
dc.relation.ispartofseriesVolume 91, Issue 4
dc.rights© 2015 American Physical Society (APS). This is the accepted version of the following article: Puisto, Antti & Mohtaschemi, Mikael & Alava, Mikko J. & Illa, Xavier. 2015. Dynamic hysteresis in the rheology of complex fluids. Physical Review E. Volume 91, Issue 4. 042314/1-8. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.91.042314, which has been published in final form at http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.042314.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordcomplex fluidsen
dc.subject.keywordrheologyen
dc.subject.keywordhysteresisen
dc.subject.otherPhysicsen
dc.titleDynamic hysteresis in the rheology of complex fluidsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen
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