SHEAR THICKENING AS A CONSEQUENCE OF AN ACOUSTIC-RESONANCE IN SHEAREDCOLLOIDAL CRYSTALS

Authors
KALDASCH J LAVEN J STEIN HN
Citation
J. Kaldasch et al., SHEAR THICKENING AS A CONSEQUENCE OF AN ACOUSTIC-RESONANCE IN SHEAREDCOLLOIDAL CRYSTALS, Journal of rheology, 42(6), 1998, pp. 1285-1301
Citations number
26
Categorie Soggetti
Mechanics
Journal title
Journal of rheology → ACNP
ISSN journal
01486055
Volume
42
Issue
6
Year of publication
1998
Pages
1285 - 1301
Database
ISI
SICI code
0148-6055(1998)42:6<1285:STAACO>2.0.ZU;2-1
Abstract
A model is presented that predicts the critical shear rate of shear th ickening of soft sphere colloidal suspensions. It is based on the idea that shear in a colloidal crystal leads to a periodic variation of th e elastic modulus with time. At a specific shear rate an acoustic reso nance occurs which leads to an increase of the viscosity. Good agreeme nt with experimental results could be obtained by fitting the single p arameter of the model. (C) 1998 The Society of Rheology. [S0148-6055(9 8)01505-3].