Lemaître Anaël, Caroli Christiane
Université Paris Est-Institut Navier, 77420 Champs-sur-Marne, France.
Phys Rev Lett. 2009 Aug 7;103(6):065501. doi: 10.1103/PhysRevLett.103.065501. Epub 2009 Aug 6.
We perform an extensive numerical study of avalanche behavior in a two-dimensional Lennard-Jones glass at T = 0, sheared at finite strain rates gamma[over]. From the finite size analysis of stress fluctuations and of transverse diffusion we show that flip-flip correlations remain relevant at all realistic strain rates. We predict that, in steady flow, the avalanche size scales as gamma[over];{-1/d}, with d the space dimension.
我们对处于T = 0的二维 Lennard-Jones玻璃在有限应变率γ̇下剪切时的雪崩行为进行了广泛的数值研究。通过对应力涨落和横向扩散的有限尺寸分析，我们表明在所有实际应变率下，翻转-翻转关联仍然是相关的。我们预测，在稳定流动中，雪崩大小按γ̇^(-1/d)缩放，其中d为空间维度。
