Session H13: Focus Session: Jamming Theory and Experiment I

8:00 AM–11:00 AM, Tuesday, March 22, 2011
Room: D225/226

Sponsoring Unit: GSNP
Chair: Mark Shattuck, City College of New York

Abstract ID: BAPS.2011.MAR.H13.3

Abstract: H13.00003 : Topology of the force field in a jammed granular systems exposed to an intruder

8:48 AM–9:00 AM

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  Lou Kondic

  Xiaoni Fang

  Miroslav Kramar

  Konstantin Mischaikow

  Corey O'Hern

  Jie Zhang

  Robert Behringer

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.

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