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Avalanche Size Scaling in Sheared Three-Dimensional Amorphous Solid

N. P. Bailey·J Schiøz·A. Lemaître·K. W. Jacobsen
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Abstract

We have studied the statistics of plastic rearrangement events in a simulated amorphous solid at T=0. Events are characterized by the energy release and the ``slip volume'', the product of plastic strain and system volume. Their distributions for a given system size $L$ appear to be exponential, but a characteristic event size cannot be inferred, because the mean values of these quantities increase as $L^α$ with $α\sim 3/2$. In contrast to results obtained in 2D models, we do not see simply connected avalanches. The exponent suggests a fractal shape of the avalanches, which is also evidenced by the mean fractal dimension and participation ratio.

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N. P. Bailey, J Schiøz, A. Lemaître, K. W. Jacobsen. 2007-02-20. Avalanche Size Scaling in Sheared Three-Dimensional Amorphous Solid. https://doi.org/10.1103/physrevlett.98.095501

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