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Publications [#245521] of Robert P. Behringer

Papers Published

  1. Zhang, J; Behringer, RP; Goldhirsch, I, Coarse-graining of a physical granular system, Progress of Theoretical Physics Supplement, vol. 184 no. 184 (January, 2010), pp. 16-30, Oxford University Press (OUP), ISSN 0033-068X [doi]
    (last updated on 2019/02/20)

    Abstract:
    Results, including displacement, strain and stress fields, obtained by applying a resolution-controlled coarse-graining method to an experiment, comprised of a bidisperse system of photoelastic disks under pure shear, are presented. The paper reviews the experimental methods as well as the philosophical and technical bases of the coarse-graining methods employed in this study. Some fields reveal the emergence of a shear band while others do not. Correlations of the displacement fluctuations are shown to decay on a very small scale, of the order of a few particle diameters, even close to jamming. An unexpectedly simple relation between the particle rotation angles and the rotation field is reported. Implications of these and other findings are discussed.