2008/12/09 by S. M. Fielding, S M Fielding, M. E. Cates +3 · 2 citations
Chemical Engineering · Engineering · Materials Science · Physics and Astronomy · #Advanced Materials and Mechanics #Hysteresis #Material Dynamics and Properties #Mesoscopic physics #Noise (video) #Polymer #Rheology and Fluid Dynamics Studies #Shear (geology) #Soft materials #Yield (engineering) #cond-mat.mtrl-sci #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1039/b812394m
published as Soft Matter, 2009 · 5 pages, 4 figures included
openalex publication_date 2008/12/09 · arxiv created 2008/12/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.