Dynamics of washboard road formation driven by a harmonic oscillator,
Dynamics of washboard road formation driven by a harmonic oscillator,
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由谐振子驱动的洗衣板路形成的动力学，
DOI：
10.1103/physreve.96.062904
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发表时间：
2017
影响因子：
2.4
通讯作者：
Shunji Kanie and Hiroyuki Shima
中科院分区：
文献类型：
--
作者：
Teeranai Srimahachota;Hao Zheng;Motohiro Sato;Shunji Kanie and Hiroyuki Shima
颗粒状表面经过反复的通道后，常常会自发地形成波纹状。在这项研究中，我们仔细研究了在一个自旋转的砂床，这是由一个垂直振荡臂的边缘跟踪的生长动力学。我们发现，无论是旋转速度和振荡器的频率强烈影响的发生率以及在砂床的表面的生长模式的时间演化，由于振荡器和砂床之间的间歇性碰撞。我们还发现，生长动力学涉及两个不同的集体模式，描述的平移运动的沙床上的模式。
Granular surfaces subjected to repeated passage often spontaneously develop a corrugated pattern. In this study, we scrutinized the growth dynamics of surface corrugation in a self-rotating sand bed that is traced by the edge of a vertically oscillating arm. We found that both the rotation velocity and the frequency of the oscillator strongly affect the occurrence rate of corrugation as well as the time evolution in the corrugation pattern, due to the intermittent collision between the oscillator and sand bed. We also discovered that the growth dynamics involves two distinct collective modes that describe the translational motion of the corrugation pattern on the sand bed.