Contact Network Statistics During Vibration of Disk Packings

ORAL

Abstract

We use simulations of bidisperse disks that interact via purely repulsive linear springs to determine properties of contact networks during vibration at various energies and pressures. From a set of initially existing contacts in a mechanically stable reference state the contact probability during vibration can be predicted by measuring the inter-particle potential before vibration. ~We explore the energy regions below particle rearrangement where our prediction is valid and discuss a physical mechanism for this behavior based on the exchange of potential and kinetic energy between particles.

*NSF-PREM DMR-0934206 and NSF-CBET-0968013

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Authors

  • Mark R. Kanner

    • Levich Institute and Physics Department at City College and CUNY Graduate Center

  • Carl Schreck

    • Lawrence Berkeley National Laboratory

  • Corey S. O'Hern

    • Yale University
    • Yale Univ
    • Yale University Departments of Mechanical Engineering \& Materials Science and Physics

  • Mark D. Shattuck

    • The Graduate Center and City College of the City University of New York
    • Benjamin Levich Institute, City College of the City University of New York
    • City College of New York
    • Levich Institute and Physics Department at City College