Wang P J, Li Y D, Xia J H, Liu C S
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, PO Box 1129, Hefei, People's Republic of China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jun;77(6 Pt 1):060301. doi: 10.1103/PhysRevE.77.060301. Epub 2008 Jun 23.
The physical factors controlling the power-law behavior of impact energy in a composite granular chain remain elusive. Based on event-driven simulations and the on-off intermittency of wave reflections, we obtain the probability distribution functions of the waiting time tau and the energy leakage DeltaE . They exhibit lognormal distributions, which together with the relationship between DeltaE and tau allow one to explain directly the power-law behavior of the confined energy. This work may be extended to higher dimensions and help us understand the complex dynamics in granular materials.
控制复合颗粒链中冲击能量幂律行为的物理因素仍然难以捉摸。基于事件驱动模拟和波反射的开关间歇性，我们得到了等待时间τ和能量泄漏ΔE的概率分布函数。它们呈现对数正态分布，这与ΔE和τ之间的关系一起使人们能够直接解释受限能量的幂律行为。这项工作可以扩展到更高维度，并有助于我们理解颗粒材料中的复杂动力学。
