Elastic energy, fluctuations and temperature for granular materials

Document Type

Article

Publication Date

7-15-2004

Abstract

We probe, using a model system, elastic and kinetic energies for sheared granular materials. For large enough P/Ey (pressure/Young's modulus) and P/v2 (P/kinetic energy density) elastic dominates kinetic energy, and energy fluctuations become primarily elastic in nature. This regime has likely been reached in recent experiments. We consider a generalization of the granular temperature, Tg, with both kinetic and elastic terms and that changes smoothly from one regime to the other. This Tg is roughly consistent with a temperature adapted from equilibrium statistical mechanics.

Identifier

3142680354 (Scopus)

Publication Title

Europhysics Letters

External Full Text Location

https://doi.org/10.1209/epl/i2004-10061-5

ISSN

02955075

First Page

205

Last Page

211

Issue

2

Volume

67

Grant

0137119

Fund Ref

National Science Foundation

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