Elastic energy, fluctuations and temperature for granular materials

Lou Kondic, R. P. Behringer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In our recent work (Europhys. Lett. 67,205 (2004)) we have shown that in granular systems characterized by large volume fractions, the elastic energy dominates the kinetic energy, and energy fluctuations are primarily elastic in nature. As a logical consequence of this observation, we have started exploring possible generalizations of the concept of granular temperature to dense, jammed systems where kinetic granular temperature is not expected to be relevant, at least from the energetic point of view. Therefore, we have introduced generalized granular temperature, which turns out to be roughly consistent with a temperature based on the equilibrium statistical mechanics. In this paper, we discuss the influence of various system properties on this new generalized granular temperature. These properties include the shearing rate, as well as the material properties such as stiffness, elasticity and friction.

Original languageEnglish (US)
Title of host publicationPowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Pages397-400
Number of pages4
Volume1
StatePublished - Dec 1 2005
Event5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005 - Stuttgart, Germany
Duration: Jul 18 2005Jul 22 2005

Other

Other5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005
CountryGermany
CityStuttgart
Period7/18/057/22/05

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)

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