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"Contact networks" in continuously shear thickening colloids

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Melrose, John R. and Ball, Robin (2004) "Contact networks" in continuously shear thickening colloids. Journal of Rheology, Vol.48 (No.5). pp. 961-978. doi:10.1122/1.1784784

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Official URL: http://dx.doi.org/10.1122/1.1784784

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Abstract

Many body effects that occur in continuous shear thickening of concentrated colloid suspensions are examined by using a Stokesian dynamics simulation of model systems of polymer coated particles. The shear thickening state is probed in a number of ways: computed scattering intensities, imaging of density variation using Voronoi constructions, examination of the distribution of interparticle forces, and computation of the fabric of contacts. The shear thickening transition in these systems is found to be associated with the growth of a network of close particle contacts and shear induced density variations. This paper focuses on the network of contacts. The distributions of force magnitude are found to be exponential. The network directly relates to the normal stress differences. Both the data and simple physical argument suggest that thickening can be viewed as an approach to "jamming." (C) 2004 The Society of Rheology.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Colloids, Shear flow -- Simulation methods, Rheology
Journal or Publication Title: Journal of Rheology
Publisher: Society of Rheology
ISSN: 0148-6055
Official Date: September 2004
Dates:
DateEvent
September 2004Published
Volume: Vol.48
Number: No.5
Number of Pages: 18
Page Range: pp. 961-978
DOI: 10.1122/1.1784784
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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