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    • Ripples and Shear Bands in Plowed Granular Media 

      Gravish, Nick; Umbanhowar, Paul; Goldman, Daniel I. (2009-10-16)
      Monodisperse packings of dry, air-fluidized granular media typically exist between volume fractions from $\Phi$= 0.585 to 0.64. We demonstrate that the dynamics of granular drag are sensitive to volume fraction $\Phi$ and ...