Origins of shear dilatancy and shear thickening phenomena

✍ Scribed by Leslie V. Woodcock

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 632 KB
• Volume: 111
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)85540-2

✦ Synopsis

Volumetric and rheological dilatancy (shear xhickening) arc shoxn by molecular dynamics calculations IO occur in simple classical dense fluids in both two and three dimensions. These phenomena. commonly associated with colloidal suspensions. are kinetic manifestations of the transition to athermal particle dynamics at shear rates approaching a critical characteristic response frequency_ A comparison between calculated and experimental Row curves indicates that neither mediumdependent stochastic forces nor peculiar colloidal pzir potentials are primary determining factors in the irreducible non-Newtonian rheology of dense suspensions.