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Peer-reviewedCC BY 4.0Physical Review Research

Rheology of dense vibrated granular flows: Nonmonotonic response controlled by granular temperature

  • A. Plati
  • G. Petrillo
  • L. de Arcangelis
  • A. Gnoli
  • A. Puglisi
  • A. Sarracino
  • E. Lippiello
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Abstract

We study the rheology of dense granular materials subjected to vertical vibration by using numerical simulations of a stress-imposed vane rheometer. The effective viscosity increases with confining pressure, decreases with vibration amplitude, and exhibits a nonmonotonic dependence on frequency: Weakening is observed at intermediate frequencies but is lost at high frequencies. We show that the rheological response is governed by the balance between grain-scale agitation energy and the stabilizing effect of confinement. This framework reconciles previously observed trends in viscosity and friction weakening and emphasizes the central role of energy injection and dissipation in determining granular flow properties under vibration.

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Cite

BibTeXRIS
BibTeX
@article{plati2026rheology,
  title = {{Rheology of dense vibrated granular flows: Nonmonotonic response controlled by granular temperature}},
  author = {A. Plati and G. Petrillo and L. de Arcangelis and A. Gnoli and A. Puglisi and A. Sarracino and E. Lippiello},
  journal = {Physical Review Research},
  year = {2026},
  month = jul,
  doi = {10.1103/nzmt-b7bf},
  url = {https://hal.science/hal-05773501v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Rheology of dense vibrated granular flows: Nonmonotonic response controlled by granular temperature
AU  - A. Plati
AU  - G. Petrillo
AU  - L. de Arcangelis
AU  - A. Gnoli
AU  - A. Puglisi
AU  - A. Sarracino
AU  - E. Lippiello
PY  - 2026
DA  - 2026/07/21
JO  - Physical Review Research
DO  - 10.1103/nzmt-b7bf
UR  - https://hal.science/hal-05773501v1
AB  - We study the rheology of dense granular materials subjected to vertical vibration by using numerical simulations of a stress-imposed vane rheometer. The effective viscosity increases with confining pressure, decreases with vibration amplitude, and exhibits a nonmonotonic dependence on frequency: Weakening is observed at intermediate frequencies but is lost at high frequencies. We show that the rheological response is governed by the balance between grain-scale agitation energy and the stabilizing effect of confinement. This framework reconciles previously observed trends in viscosity and friction weakening and emphasizes the central role of energy injection and dissipation in determining granular flow properties under vibration.
SN  - 2643-1564
SN  - 2643-1564
ER  -