Dynamics of Vibrated Granular Monolayers

Details Dynamics of Vibrated Granular Monolayers Dynamics of Vibrated Granular Monolayers

1999-10-24

arxiv.org/abs/cond-mat/9910371v1

Europhys. Lett. 51, 679 (2000)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figs, revtex

Scientific paper

10.1209/epl/i2000-00392-7

We study statistical properties of vibrated granular monolayers using molecular dynamics simulations. We show that at high excitation strengths, the system is in a gas state, particle motion is isotropic, and the velocity distributions are Gaussian. As the vibration strength is lowered the system's dimensionality is reduced from three to two. Below a critical excitation strength, a gas-cluster phase occurs, and the velocity distribution becomes bimodal. In this phase, the system consists of clusters of immobile particles arranged in close-packed hexagonal arrays, and gas particles whose energy equals the first excited state of an isolated particle on a vibrated plate.

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