Transition from rolling to jamming in thin granular layers

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

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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
Issue number24
StatePublished - Dec 8 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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