Aspects of weakening in granular assemblies

Details Aspects of weakening in granular assemblies Aspects of weakening in granular assemblies

2010-05-18

arxiv.org/abs/1005.3205v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

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.

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