Rolling away from the Wall into Granular Matter
The sedimentation of solid objects into granular matter near boundaries is an almost virgin field of research. Here we describe in detail the penetration dynamics of a cylindrical object into a quasi-2D granular medium. By tracking the trajectory of the cylinder as it penetrates the granular bed, we...
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| Veröffentlicht in: | Physical review letters 2020-08, Vol.125 (7), p.1-078002, Article 078002 |
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| container_title | Physical review letters |
| container_volume | 125 |
| creator | Díaz-Melián, V. L. Serrano-Muñoz, A. Espinosa, M. Alonso-Llanes, L. Viera-López, G. Altshuler, E. |
| description | The sedimentation of solid objects into granular matter near boundaries is an almost virgin field of research. Here we describe in detail the penetration dynamics of a cylindrical object into a quasi-2D granular medium. By tracking the trajectory of the cylinder as it penetrates the granular bed, we characterize two distinct kinds of motion: its center of mass moves horizontally away from the lateral wall, and it rotates around its symmetry axis. While the repulsion is caused by the loading of force chains between the intruder and the wall, the rotation can be associated to the frictional forces between the grains and the intruder. Finally, we show the analogies between the sedimentation of twin intruders released far from any boundaries, and that of one intruder released near a vertical wall. |
| doi_str_mv | 10.1103/PhysRevLett.125.078002 |
| format | Article |
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| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2020-08, Vol.125 (7), p.1-078002, Article 078002 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society; EZB Electronic Journals Library |
| subjects | Boundaries Earth Sciences Geophysics Granular media Physics Sciences of the Universe Sedimentation Sedimentation & deposition |
| title | Rolling away from the Wall into Granular Matter |
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