Entropy and temperature of a static granular assembly: an ab initio approach |
| |
Authors: | Henkes Silke O'Hern Corey S Chakraborty Bulbul |
| |
Institution: | Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02454-9110, USA. |
| |
Abstract: | We construct a statistical framework for static assemblies of deformable grains which parallels that of equilibrium statistical mechanics but with a conservation principle based on the mechanical stress tensor. We define a state function that has all the attributes of entropy. In particular, maximizing this function leads to a well-defined granular temperature and the equivalent of the Boltzman distribution for ensembles of grain packings. Predictions of the ensemble are verified against simulated packings of frictionless, deformable disks. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|