413 citations · 2k across the 45 of their papers we have counts for
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cond-mat.soft2010★ 133 cited
Force and flow transition in plowed granular media
Nick Gravish, Paul B. Umbanhowar, Daniel I. Goldman
We use plate drag to study the response of granular media to localized forcing as a function of volume fraction, . A bifurcation in the force and flow occurs at the onset of dil…
cond-mat.soft2010★ 139 cited
Granular impact and the critical packing state
Paul Umbanhowar, Daniel I. Goldman
Impact dynamics during collisions of spheres with granular media reveal a pronounced and non-trivial dependence on volume fraction ϕ. Post impact crater morphology identifies the c…