Shear banding, aging and noise dynamics in soft glassy materials

S. M. Fielding, M. E. Cates, P. Sollich

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)2378-2382
Number of pages5
JournalSoft Matter
Volume5
Issue number12
DOIs
Publication statusPublished - 2009

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