Elastic energy, fluctuations and temperature for granular materials

by: L Kondic, RP Behringer

EPL (Europhysics Letters), Vol. 67, No. 2. (2004), pp. 205-211.

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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/rv2 (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.

@article{citeulike:2722737, 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/rv2 (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.}, author = {Kondic, L. and Behringer, R. P. }, citeulike-article-id = {2722737}, doi = {10.1209/epl/i2004-10061-5}, journal = {EPL (Europhysics Letters)}, keywords = {behringer, fluctuation, grains, qualifier, temperature}, number = {2}, pages = {205--211}, posted-at = {2008-04-26 23:49:06}, priority = {2}, title = {Elastic energy, fluctuations and temperature for granular materials}, url = {http://dx.doi.org/10.1209/epl/i2004-10061-5}, volume = {67}, year = {2004} }

RIS record

TY - JOUR ID - citeulike:2722737 L3 - citeulike-article-id:2722737 TI - Elastic energy, fluctuations and temperature for granular materials JF - EPL (Europhysics Letters) VL - 67 IS - 2 SP - 205 EP - 211 N2 - 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/rv2 (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. KW - behringer KW - fluctuation KW - grains KW - qualifier KW - temperature AU - Kondic, L AU - Behringer, RP PY - 2004/// UR - http://dx.doi.org/10.1209/epl/i2004-10061-5 ER -

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