Publications [#245621] of Robert P. Behringer

Papers Published
  1. Howell, D; Behringer, RP; Veje, C, Stress Fluctuations in a 2D Granular Couette Experiment: A Continuous Transition, Physical Review Letters, vol. 82 no. 26 (June, 1999), pp. 5241-5244 [doi] .

    Experiments on a slowly sheared 2D granular material show a continuous transition as the packing fraction γ passes through γc ≃ 0.776. The mean stress, σ̄, plays the role of an order parameter. As γ → γc from above, (1) the compressibility becomes large, (2) a slowing down of the mean velocity occurs, (3) the force distributions change, and (4) the network of stress chains changes from intermittent long radial chains near γc to a tangled dense network for larger γ. © 1999 The American Physical Society.