Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.058302
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Funding
- National Center for Earth Surface Dynamics (NCED)
- NSF Science and Technology Center [EAR-0120914]
- NSF [CBET-0932735]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0932735] Funding Source: National Science Foundation
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Models for dense sheared granular materials indicate that their rheological properties depend on particle size, but the representative size for mixtures is not obvious. Here, we computationally study pressure on a boundary due to sheared granular mixtures to determine its dependence on particle size distribution. We find that the pressure does not depend monotonically on average particle size. Instead it has an additional dependence on a measure of the effective free volume per particle we adapt from an expression for packing of monosized particles near the jammed state.
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