Theory of powders
Abstract
Starting from the observations that powders have a large number of particles, and reproducible properties, we show how statistical mechanics applies to powders. The volume of the powder plays the role of the energy in conventional statistical mechanics with the hypothesis that all states of a specified volume are equally probable. We introduce a variable X  the compactivity  which is analogous to the temperature in thermodynamics. Some simple models are considered which demonstrate how the problems involved can be tackled using the concept of compactivity.
 Publication:

Physica A Statistical Mechanics and its Applications
 Pub Date:
 June 1989
 DOI:
 10.1016/03784371(89)900344
 Bibcode:
 1989PhyA..157.1080E