Effective Temperatures of a Driven System Near Jamming

Published

August 26, 2002

Author(s)

I K. Ono, C S. O'Hern, Stephen A. Langer, A J. Liu, S R. Nagel, D J. Durian

Abstract

Fluctuations in a model of a sheared, zero-temperature foam are studied numerically. Five different quantities that reduce to the true temperature in an equilibrium thermal system are calculated. All five have the same shear-rate dependence, and three have the same value. Near the onset of jamming, the relaxation time is the same function of these three temperatures in the sheared system as of the true temperature in an unsheared system. These results imply that statistical mechanics is useful for the system and provide strong support for the concept of jamming.

Citation

Physical Review Letters

Volume

89

Issue

9

Pub Type

Journals

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Keywords

foam, granular materials, jamming

Citation

Ono, I. , O'Hern, C. , Langer, S. , Liu, A. , Nagel, S. and Durian, D. (2002), Effective Temperatures of a Driven System Near Jamming, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150833 (Accessed October 10, 2025)