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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7422
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dc.contributor.authorDhar, Subhransu-
dc.contributor.authorChattopadhyay, Sebanti Sebanti-
dc.contributor.authorMajumdar, Sayantan-
dc.date.accessioned2020-01-31T09:49:10Z-
dc.date.available2020-01-31T09:49:10Z-
dc.date.issued2020-01-31T09:49:10Z-
dc.identifier.citationJournal of Physics: Condensed Matter, 2020, Vol.32, Article No.124002en_US
dc.identifier.issn0953-8984-
dc.identifier.issn1361-648X (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7422-
dc.descriptionRestricted Accessen_US
dc.description.abstractUnder an increasing applied shear stress ([ image ]), the viscosity of many dense particulate suspensions increases drastically beyond a stress onset ([ image ]), a phenomenon known as discontinuous shear-thickening. Recent studies point out that some suspensions can transform into a stress induced solid-like shear jammed (SJ) state at high particle volume fraction ([ image ]). SJ state develops a finite yield stress and hence is distinct from a shear-thickened state. Here, we study the steady state shear-thickening behaviour of dense suspensions formed by dispersing colloidal polystyrene particles (PS) in polyethylene glycol (PEG). We find that for small [ image ] values the viscosity of the suspensions as a function of [ image ] can be well described by Krieger─Dougherty (KD) relation. However, for higher values of [ image ] ([ image ][ image ]), KD relation systematically overestimates the measured viscosity, particularly for higher [ image ] values. This systematic deviation can be rationalized by the weakening of the sample due to flow induced failures of the solid-like SJ state. Using Wyart─Cates model, we propose a method to predict the SJ onset from the steady state rheology measurements. Our results are further supported by in situ optical imaging of the sample boundary under shear.en_US
dc.language.isoenen_US
dc.publisherThe IOP Publishing Ltd.en_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2020JPCM...32l4002D/abstracten_US
dc.relation.urihttps://arxiv.org/abs/1908.07183en_US
dc.relation.urihttps://doi.org/10.1088/1361-648X/ab5bd2en_US
dc.rights2019 IOP Publishing Ltd.en_US
dc.subjectshear jammingen_US
dc.subjectdense suspensionsen_US
dc.subjectrheologyen_US
dc.titleSignature of jamming under steady shear in dense particulate suspensionsen_US
dc.typeArticleen_US
dc.additionalSupplementary Information Availableen_US
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