No CrossRef data available.
Article contents
An Experimental Study of the Fluctuations in Granular Drag
Published online by Cambridge University Press: 01 February 2011
Abstract
We study fluctuations in the drag force resisting the motion of an object being pulled through a dense spherical granular medium. These fluctuations are stick-slip in nature due to the jamming and reorganization of the grains. The fluctuations in the force are periodic at small depths, but they become “stepped” at large depths. We interpret this transition as a consequence of the long-range nature of the force chains.
- Type
- Research Article
- Information
- Copyright
- Copyright © Materials Research Society 2000
References
REFERENCES
1.
Cates, M. E., Wittmer, J. P., Bouchaud, J.-P., and Claudin, P., Phys. Rev. Lett.
81, 1841 (1998) and cond-mat/9901009 (1999);Google Scholar
3.
Jaeger, H. M., Nagel, S. R., and Behringer, R. P., Rev. Mod. Phys.
68, 1259 (1996);Google Scholar
6.
Albert, R., Pfeifer, M. A., Barabasi, A.-L., and Schiffer, P., Phys. Rev. Lett.
82, 205 (1999).Google Scholar
8. The apparatus was a modified version of that described in reference 6, to which we added the spring on the force cell and improved the bearings.Google Scholar
9. Unless otherwise noted, data are shown for dg = 0.9 mm, k = 25 N/cm and v = 0.2 mm/s.Google Scholar
10. Similar scaling has been reported for fluctuations in the normal force from sheared granular materials in an annular Couette geometry.Google Scholar
13. See, for example, Brown, R. L. and Richards, J. C., Principles of Powder Mechanics (Pergamon Press, Oxford, 1970).Google Scholar