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      Crater formation during raindrop impact on sand

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          Abstract

          After a raindrop impacts on a granular bed, a crater is formed as both drop and target deform. After an initial, transient, phase in which the maximum crater depth is reached, the crater broadens outwards until a final steady shape is attained. By varying the impact velocity of the drop and the packing density of the bed, we find that avalanches of grains are important in the second phase and hence, affect the final crater shape. In a previous paper, we introduced an estimate of the impact energy going solely into sand deformation and here we show that both the transient and final crater diameter collapse with this quantity for various packing densities. The aspect ratio of the transient crater is however altered by changes in the packing fraction.

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          Photoinduced bending of a coumarin-containing supramolecular polymer

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            The collapse of a cylindrical cavity in a granular medium

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              Author and article information

              Journal
              2016-06-10
              Article
              1606.03364
              05abec8d-0648-4d0c-a7a1-ded88bb9daa0

              http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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              Custom metadata
              8 pages, 9 figures
              cond-mat.soft

              Condensed matter
              Condensed matter

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