Transition from rolling to jamming in thin granular layers

C. Marone, B. M. Carpenter, P. Schiffer

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Abstract

We study the granular jamming transition for sheared layers of spherical beads ranging in thickness from 1 to 3 times the grain diameter d. As the layer thickness increases slightly above d, the measured friction jumps discontinuously from 0.02 to >0.1, marking the transition from rolling to jamming. Above a critical layer thickness for jamming, the effective granular pressure displays a power law increase with thickness. For thin layers, friction and P increases as the packing fraction decreases near the jamming transition, in contrast to expectations for bulk granular matter.

Original languageEnglish (US)
Article number248001
JournalPhysical Review Letters
Volume101
Issue number24
DOIs
Publication statusPublished - Dec 8 2008

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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