Force fluctuations in a pushed granular material

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 s...

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Bibliographic Details
Published in:Granular matter 2000-10, Vol.2 (4), p.171-178
Main Authors: Nouguier, C., Bohatier, C., Moreau, J. J., Radjai, F.
Format: Article
Language:English
Subjects:
Engineering Sciences
Mechanics
Mechanics of materials
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Summary: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.
ISSN:1434-5021
1434-7636
DOI:10.1007/PL00010912