Microscopic Mechanism for Shear Thickening of Non-Brownian Suspensions

被引：213

作者：

Fernandez, Nicolas ^{[1
]}

Mani, Roman ^{[2
]}

Rinaldi, David ^{[3
]}

Kadau, Dirk ^{[2
]}

Mosquet, Martin ^{[3
]}

Lombois-Burger, Helene ^{[3
]}

Cayer-Barrioz, Juliette ^{[4
]}

Herrmann, Hans J. ^{[2
]}

Spencer, Nicholas D. ^{[1
]}

Isa, Lucio ^{[1
]}

机构：

[1] ETH, Lab Surface Sci & Technol, Dept Mat, CH-8093 Zurich, Switzerland

[2] ETH, Dept Civil Environm & Geomat Engn, CH-8093 Zurich, Switzerland

[3] Lafarge LCR, F-38070 St Quentin Fallavier, France

[4] Ecole Cent Lyon, Lab Tribol & Dynam Syst, UMR 5513, CNRS, F-69130 Ecully, France

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 10期

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

CONCENTRATED SUSPENSIONS; METHACRYLIC-ACID; VISCOSITY; FLOW; DILATANCY; RHEOLOGY;

D O I：

10.1103/PhysRevLett.111.108301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a simple model, supported by contact-dynamics simulations as well as rheology and friction measurements, that links the transition from continuous to discontinuous shear thickening in dense granular pastes to distinct lubrication regimes in the particle contacts. We identify a local Sommerfeld number that determines the transition from Newtonian to shear-thickening flows, and then show that the suspension's volume fraction and the boundary lubrication friction coefficient control the nature of the shear-thickening transition, both in simulations and experiments.

引用

页数：5

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