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Issue 12, 2009
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Shear banding, aging and noise dynamics in soft glassy materials

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Abstract

The ‘soft glassy rheology’ (SGR) model gives an appealing account of the flow of non-ergodic soft materials in terms of the local yield dynamics of mesoscopic elements. Newtonian, power-law, and yield-stress fluid regimes arise on varying a ‘noise temperature’, x. Here we extend the model, to capture the idea that the noise is largely caused by yield itself. The extended model can account for the viscosity-bifurcation and shear-banding effects reported recently in a wide range of soft materials. A variant model may shed light on shear banding and strain-rate hysteresis seen in glassy star polymer solutions.

Graphical abstract: Shear banding, aging and noise dynamics in soft glassy materials

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Publication details

The article was received on 21 Jul 2008, accepted on 16 Oct 2008 and first published on 09 Dec 2008


Article type: Paper
DOI: 10.1039/B812394M
Citation: Soft Matter, 2009,5, 2378-2382
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    Shear banding, aging and noise dynamics in soft glassy materials

    S. M. Fielding, M. E. Cates and P. Sollich, Soft Matter, 2009, 5, 2378
    DOI: 10.1039/B812394M

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