Distribution of forces and 'hydrodynamic clustering' in a shear thickened colloid

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dc.creatorMelrose, John R.
dc.date2000-01-13
dc.date.accessioned2026-07-07T02:36:33Z
dc.date.available2026-07-07T02:36:33Z
dc.descriptionSheared concentrated colloids with short range polymer coats are examined via simulations. Distributions of force are found to be sums of exponentials. The 'hydrodynamic clustering' underlying the shear thickening effect is shown, in this system, to be a network of percolating coat contacts, with coats both in compression and extension. The geometry and kinetics of this network are explored along with its relation to the bulk stress tensor. Particles experience strong fluctuations in force over epochs $\it{circa}$ 10% strain. Density fluctuations up to glassy volume fractions give rise to scattering peaks at low Q in the thickening regime. There is some commonality in the physics of this colloid particulate system and other granular media.
dc.description4 pages, 3 figures, submitted to PRL
dc.identifierhttps://arxiv.org/abs/cond-mat/0001194
dc.identifierhttp://arxiv.org/abs/cond-mat/0001194
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/15964
dc.subjectSoft Condensed Matter
dc.subjectMaterials Science
dc.titleDistribution of forces and 'hydrodynamic clustering' in a shear thickened colloid
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