High intensity tapping regime in a frustrated lattice gas model of granular compaction

TL;DR

This paper explores a lattice gas model for granular compaction under high-intensity tapping, revealing behaviors similar to more complex simulations, including a non-monotonic packing fraction response.

Contribution

It demonstrates that a simple lattice gas model can replicate key features of granular compaction observed in advanced molecular dynamics models, especially at high tapping intensities.

Findings

Packing fraction exhibits a minimum at certain tapping strengths.

Model reproduces trends seen in more sophisticated simulations.

High intensity tapping causes significant pile expansion.

Abstract

In the frame of a well established lattice gas model for granular compaction, we investigate the high intensity tapping regime where a pile expands significantly during external excitation. We find that this model shows the same general trends as more sophisticated models based on molecular dynamic type simulations. In particular, a minimum in packing fraction as a function of tapping strength is observed in the reversible branch of an annealed tapping protocol.