Reversibility and effective temperature in jammed granular matter

Chaoming Song, P. Wang, J. Brujić, H. A. Makse

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

Abstract

We review experimental progress toward the understanding of a thermodynamic formulation of jammingingranular matter. Asaprelude of the dynamical measurements, westudyanovel compaction procedure at varying confining oscillatory pressures which ensures that the granular system has reached a reversible jammed state, i.e., the state of the system does not depend on the path taken despite the path dependency in the particle interactions. We then investigate the existence of an effective temperature with a thermodynamic meaning for jammed granular matter. The measurement of the effective temperature is realized in the laboratory by slowly shearing a closely-packed ensemble of spherical beads confined by an external pressure in a Couette geometry. All the probe particles, independent of their characteristic features and the shear rate, equilibrate at the same temperature, given by the packing density of the system. This suggests that the effective temperature is a physical variable for the nearly jammed system.

Original languageEnglish (US)
Title of host publicationPowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Pages387-391
Number of pages5
Volume1
StatePublished - 2005
Externally publishedYes
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

Fingerprint

Thermodynamics
Temperature
Particle interactions
Shearing
Shear deformation
Compaction
Geometry

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Cite this

Song, C., Wang, P., Brujić, J., & Makse, H. A. (2005). Reversibility and effective temperature in jammed granular matter. In Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media (Vol. 1, pp. 387-391)

Reversibility and effective temperature in jammed granular matter. / Song, Chaoming; Wang, P.; Brujić, J.; Makse, H. A.

Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. Vol. 1 2005. p. 387-391.

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

Song, C, Wang, P, Brujić, J & Makse, HA 2005, Reversibility and effective temperature in jammed granular matter. in Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. vol. 1, pp. 387-391, 5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005, Stuttgart, Germany, 7/18/05.
Song C, Wang P, Brujić J, Makse HA. Reversibility and effective temperature in jammed granular matter. In Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. Vol. 1. 2005. p. 387-391
Song, Chaoming ; Wang, P. ; Brujić, J. ; Makse, H. A. / Reversibility and effective temperature in jammed granular matter. Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. Vol. 1 2005. pp. 387-391
@inproceedings{b821835fa9e3410b87a7ae9d9f423c98,
title = "Reversibility and effective temperature in jammed granular matter",
abstract = "We review experimental progress toward the understanding of a thermodynamic formulation of jammingingranular matter. Asaprelude of the dynamical measurements, westudyanovel compaction procedure at varying confining oscillatory pressures which ensures that the granular system has reached a reversible jammed state, i.e., the state of the system does not depend on the path taken despite the path dependency in the particle interactions. We then investigate the existence of an effective temperature with a thermodynamic meaning for jammed granular matter. The measurement of the effective temperature is realized in the laboratory by slowly shearing a closely-packed ensemble of spherical beads confined by an external pressure in a Couette geometry. All the probe particles, independent of their characteristic features and the shear rate, equilibrate at the same temperature, given by the packing density of the system. This suggests that the effective temperature is a physical variable for the nearly jammed system.",
author = "Chaoming Song and P. Wang and J. Brujić and Makse, {H. A.}",
year = "2005",
language = "English (US)",
isbn = "0415383471",
volume = "1",
pages = "387--391",
booktitle = "Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media",

}

TY - GEN

T1 - Reversibility and effective temperature in jammed granular matter

AU - Song, Chaoming

AU - Wang, P.

AU - Brujić, J.

AU - Makse, H. A.

PY - 2005

Y1 - 2005

N2 - We review experimental progress toward the understanding of a thermodynamic formulation of jammingingranular matter. Asaprelude of the dynamical measurements, westudyanovel compaction procedure at varying confining oscillatory pressures which ensures that the granular system has reached a reversible jammed state, i.e., the state of the system does not depend on the path taken despite the path dependency in the particle interactions. We then investigate the existence of an effective temperature with a thermodynamic meaning for jammed granular matter. The measurement of the effective temperature is realized in the laboratory by slowly shearing a closely-packed ensemble of spherical beads confined by an external pressure in a Couette geometry. All the probe particles, independent of their characteristic features and the shear rate, equilibrate at the same temperature, given by the packing density of the system. This suggests that the effective temperature is a physical variable for the nearly jammed system.

AB - We review experimental progress toward the understanding of a thermodynamic formulation of jammingingranular matter. Asaprelude of the dynamical measurements, westudyanovel compaction procedure at varying confining oscillatory pressures which ensures that the granular system has reached a reversible jammed state, i.e., the state of the system does not depend on the path taken despite the path dependency in the particle interactions. We then investigate the existence of an effective temperature with a thermodynamic meaning for jammed granular matter. The measurement of the effective temperature is realized in the laboratory by slowly shearing a closely-packed ensemble of spherical beads confined by an external pressure in a Couette geometry. All the probe particles, independent of their characteristic features and the shear rate, equilibrate at the same temperature, given by the packing density of the system. This suggests that the effective temperature is a physical variable for the nearly jammed system.

UR - http://www.scopus.com/inward/record.url?scp=84863128899&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863128899&partnerID=8YFLogxK

M3 - Conference contribution

SN - 0415383471

SN - 9780415383479

VL - 1

SP - 387

EP - 391

BT - Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media

ER -