Universal features of the stick-slip dynamics of an intruder moving through a confined granular medium

Luis A. Pugnaloni, C. Manuel Carlevaro, Ryan Kozlowski, Hu Zheng, Lou Kondic, Joshua E.S. Socolar

Research output: Contribution to journalArticlepeer-review

Abstract

Experiments and simulations of an intruder dragged by a spring through a two-dimensional annulus of granular material exhibit robust force fluctuations. At low packing fractions (f<f0), the intruder clears an open channel. Above f0, stick-slip dynamics develop, with an average energy release that is independent of the particle-particle and particle-base friction coefficients but does depend on the width W of the annulus and the diameter D of the intruder. A simple model predicts the dependence of f0 on W and D, allowing for a data collapse for the average energy release as a function of f/f0. These results pose challenges for theories of mechanical failure in amorphous materials.

Original languageEnglish (US)
Article numberL042902
JournalPhysical Review E
Volume105
Issue number4
DOIs
StatePublished - Apr 2022

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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