Force fluctuations in a pushed granular material |
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| Authors: | C Nouguier C Bohatier J J Moreau F Radjai |
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| Affiliation: | (1) Laboratoire de Mécanique et Génie Civil, Case 048, Université Montpellier II 34095 Montpellier Cedex 5, France e-mail: nouguier@lmgc.univ-montp2.fr, FR |
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| Abstract: | We analyse the time evolution of stresses in a noncohesive granular bed cut by the motion of a tool. Our numerical simulations
both in two and three dimensions reveal large fluctuations of the force acting on the tool. These fluctuations have a decreasing
exponential distribution. We find that, in spite of fluctuations, the mean force is well fitted by an analytical form obtained
from a limit analysis with Coulomb's failure criterion.
Received: 7 January 2000 |
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| Keywords: | Numerical simulations contact dynamics force fluctuations statistical analysis |
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