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Paper detail

Aspects of weakening in granular assemblies

We study numerical simulations of large (N~10^4) two-dimensional quasi-static granular assemblies subjected to a slowly increasing deviator stress. We report some peculiarities in the behavior of these packings that have not yet been adressed. The number of sliding contacts is not necessarily related to stability: first the number of sliding contacts rises linearly and smoothly with the applied stress. Then, at approximately half the peak stress, the increase slows down, a plateau develops, and a decrease follows.

preprint2010arXivOpen access
Philipp WelkerSean McNamara
cond-mat.othercond-mat.soft
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Philipp WelkerSean McNamara

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