Topology of the force field in a jammed granular systems exposed to an intruder

ORAL

Abstract

It is well known that the structure of forces and stresses in granular systems goes through significant changes close to jamming. In this talk, we will present precise and objective measures of these changes based on topological properties of the force field in granular systems exposed to compression and shear. Then, we will discuss how these measures evolve in granular systems during an impact of a large intruder. We will particularly concentrate on the role of packing, polydispersity, and friction on structure of the force field.

*Supported by NSF Grant. No. DMS-0835611 and DTRA Grant No. 1-10-1-0021

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Authors

  • Lou Kondic

    • New Jersey Institute of Technology
    • NJIT

  • Xiaoni Fang

    • NJIT

  • Miroslav Kramar

    • Rutgers

  • Konstantin Mischaikow

    • Rutgers

  • Corey O'Hern

    • Yale University
    • Departments of Chemical Engineering, Physics, Mechanical Engineering and Materials Science, and Molecular Biophysics and Biochemistry, Yale University
    • Yale

  • Jie Zhang

    • Indiana University - Purdue University Fort Wayne
    • Duke

  • Robert Behringer

    • Duke Physics
    • Duke University
    • Department of Physics, Duke University
    • Duke