Two-phase densification of cohesive granular aggregates

Details Two-phase densification of cohesive granular aggregates Two-phase densification of cohesive granular aggregates

2001-05-02

arxiv.org/abs/cond-mat/0105020v1

Physics

Condensed Matter

Materials Science

7 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.88.204302

When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressed upon with a ram, these aggregates densify by particle rearrangement. Here we introduce experimental evidence to the effect that particle rearrangement is a spatially heterogeneous phenomenon, which occurs in the form of a phase transformation between two configurational phases of the granular aggregate. We then show that the energy landscape associated with particle rearrangement is consistent with our interpretation of the experimental results. Besides affording insight into the physics of the granular state, our conclusions are relevant to many engineering processes and natural phenomena.

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