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Shear fronts in shear-thickening suspensions

Shear fronts in shear-thickening suspensions
Shear fronts in shear-thickening suspensions
We study the fronts that appear when a shear-thickening suspension is submitted to a sudden driving force at a boundary. Using a quasi-one-dimensional experimental geometry, we extract the front shape and the propagation speed from the suspension flow field and map out their dependence on applied shear. We find that the relation between stress and velocity is quadratic, as is generally true for inertial effects in liquids, but with a pre-factor that can be much larger than the material density. We show that these experimental findings can be explained by an extension of a phenomenological model originally developed to describe steady-state shear-thickening. This is achieved by introducing a sole additional parameter: the characteristic strain scale that controls the crossover from start-up response to steady-state behavior. The theoretical framework we obtain points out a linkage between transient and steady-state properties of shear-thickening materials.
2469-990X
1-20
Han, Endao
5092fa24-61ad-4fd8-9942-17ae58dc6957
Wyart, Matthieu
d4a9988d-6c41-45ba-afaf-590f238cbc68
Peters, Ivo R.
222d846e-e620-4017-84cb-099b14ff2d75
Jaeger, Heinrich M.
ade31874-6896-4cfa-9ca3-6ac1abffc770
Han, Endao
5092fa24-61ad-4fd8-9942-17ae58dc6957
Wyart, Matthieu
d4a9988d-6c41-45ba-afaf-590f238cbc68
Peters, Ivo R.
222d846e-e620-4017-84cb-099b14ff2d75
Jaeger, Heinrich M.
ade31874-6896-4cfa-9ca3-6ac1abffc770

Han, Endao, Wyart, Matthieu, Peters, Ivo R. and Jaeger, Heinrich M. (2018) Shear fronts in shear-thickening suspensions. Physical Review Fluids, 3 (7), 1-20, [073301]. (doi:10.1103/PhysRevFluids.3.073301).

Record type: Article

Abstract

We study the fronts that appear when a shear-thickening suspension is submitted to a sudden driving force at a boundary. Using a quasi-one-dimensional experimental geometry, we extract the front shape and the propagation speed from the suspension flow field and map out their dependence on applied shear. We find that the relation between stress and velocity is quadratic, as is generally true for inertial effects in liquids, but with a pre-factor that can be much larger than the material density. We show that these experimental findings can be explained by an extension of a phenomenological model originally developed to describe steady-state shear-thickening. This is achieved by introducing a sole additional parameter: the characteristic strain scale that controls the crossover from start-up response to steady-state behavior. The theoretical framework we obtain points out a linkage between transient and steady-state properties of shear-thickening materials.

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Shear_fronts_in_shear_thickening_suspensions - Accepted Manuscript
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More information

Accepted/In Press date: 13 June 2018
e-pub ahead of print date: 11 July 2018
Published date: 11 July 2018

Identifiers

Local EPrints ID: 422468
URI: http://eprints.soton.ac.uk/id/eprint/422468
ISSN: 2469-990X
PURE UUID: 601ab11a-9149-433e-8732-40f115bd5024
ORCID for Ivo R. Peters: ORCID iD orcid.org/0000-0002-3549-3322

Catalogue record

Date deposited: 24 Jul 2018 16:30
Last modified: 22 Nov 2021 03:08

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Contributors

Author: Endao Han
Author: Matthieu Wyart
Author: Ivo R. Peters ORCID iD
Author: Heinrich M. Jaeger

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