Micromechanical Origin of Particle Size Segregation

L. Jing, C. Y. Kwok, Yat Fai Leung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

65 Citations (Scopus)


We computationally study the micromechanics of shear-induced size segregation and propose distinct migration mechanisms for individual large and small particles. While small particles percolate through voids without enduring contacts, large particles climb under shear through their crowded neighborhoods with anisotropic contact network. Particle rotation associated with shear is necessary for the upward migration of large particles. Segregation of large particles can be suppressed with inadequate friction, or with no rotation; increasing interparticle friction promotes the migration of large particles, but has little effect on the percolation of small particles.
Original languageEnglish
Article number118001
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 15 Mar 2017

ASJC Scopus subject areas

  • General Physics and Astronomy


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