Bailey Nicholas P, Schiøtz Jakob, Lemaître Anaël, Jacobsen Karsten W
Department of Mathematics and Physics (IMFUFA), DNRF Center "Glass and Time", Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark.
Phys Rev Lett. 2007 Mar 2;98(9):095501. doi: 10.1103/PhysRevLett.98.095501. Epub 2007 Feb 28.
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.
我们研究了温度T = 0时模拟非晶态固体中塑性重排事件的统计特性。这些事件的特征在于能量释放和“滑移体积”，即塑性应变与系统体积的乘积。对于给定的系统尺寸L，它们的分布似乎是指数分布，但无法推断出特征事件尺寸，因为这些量的平均值随Lα增加，其中α约为3/2。与二维模型的结果相反，我们没有看到简单连通的雪崩。该指数表明雪崩具有分形形状，这也由平均分形维数和参与率所证实。
