By detailed molecular dynamics and Monte Carlo simulations of a model system we show that granular materials at rest can be described as thermodynamics systems. First, we show that granular packs can be characterized by few parameters, as much as fluids or solids. Then, in a second independent step, we demonstrate that these states can be described in terms of equilibrium distributions which coincide with the statistical mechanics of powders first proposed by Edwards. We also derive the system equation of state as a function of the “configurational temperature,” its new intensive thermodynamic parameter.

Thermodynamics and Statistical Mechanics of Dense Granular Media / A., Coniglio; Nicodemi, Mario; M., Pica Ciamarra. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 97:(2006), pp. 158001-1-158001-8. [10.1103/PhysRevLett.97.158001]

Thermodynamics and Statistical Mechanics of Dense Granular Media

NICODEMI, MARIO;
2006

Abstract

By detailed molecular dynamics and Monte Carlo simulations of a model system we show that granular materials at rest can be described as thermodynamics systems. First, we show that granular packs can be characterized by few parameters, as much as fluids or solids. Then, in a second independent step, we demonstrate that these states can be described in terms of equilibrium distributions which coincide with the statistical mechanics of powders first proposed by Edwards. We also derive the system equation of state as a function of the “configurational temperature,” its new intensive thermodynamic parameter.
2006
Thermodynamics and Statistical Mechanics of Dense Granular Media / A., Coniglio; Nicodemi, Mario; M., Pica Ciamarra. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 97:(2006), pp. 158001-1-158001-8. [10.1103/PhysRevLett.97.158001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/202708
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