A microscopic theory for discontinuous shear thickening of frictional granular materials

Kuniyasu Saitoh, Hisao Hayakawa

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We extend a recent theory for the rheology of frictionless granular materials [1] to the case of frictional disks in two dimensions. Employing a frictional contact model for molecular dynamics simulations, we derive difference equations of the shear stress, the granular temperature, and the spin temperature from the generalized Green-Kubo formula, where all the terms are given by microscopic expressions. The numerical solutions of the difference equations not only describe the flow curve, but also reproduce the hysteresis of shear stress, which can be the signature of discontinuous shear thickening of frictional disks.

Original languageEnglish
Article number03063
JournalEPJ Web of Conferences
Volume140
DOIs
Publication statusPublished - 2017 Jun 30
Event8th International Conference on Micromechanics on Granular Media, Powders and Grains 2017 - Montpellier, France
Duration: 2017 Jul 32017 Jul 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'A microscopic theory for discontinuous shear thickening of frictional granular materials'. Together they form a unique fingerprint.

  • Cite this