Avalanche size scaling in sheared three-dimensional amorphous solid.
We study 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 Lalpha with alpha approximately 3/2. In contrast with 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.
Bailey
Nicholas P
NP
Department of Mathematics and Physics (IMFUFA), DNRF Center "Glass and Time", Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark. nbailey@ruc.dk
Schiøtz
Jakob
J
Lemaître
Anaël
A
Jacobsen
Karsten W
KW