弹跳二聚体的动力学
Dynamics of a bouncing dimer
摘要：
本文研究了二聚体在垂直振动平板上的弹跳动力学。二聚体，由两个球体刚性连接的光棒，表现出几种模式，这取决于初始和驱动条件。第一激发模式具有新颖的水平漂移，其中二聚体的一端在大部分周期期间停留在板上，而另一端与板同相地反弹。漂移的速度和方向取决于二聚体的纵横比。我们采用事件驱动的模拟的基础上的二聚体和板之间的摩擦相互作用的详细治疗，以阐明在漂移模式的运输机制的性质。
英文摘要：
We investigate the dynamics of a dimer bouncing on a vertically oscillated plate. The dimer, composed of two spheres rigidly connected by a light rod, exhibits several modes depending on initial and driving conditions. The first excited mode has a novel horizontal drift in which one end of the dimer stays on the plate during most of the cycle, while the other end bounces in phase with the plate. The speed and direction of the drift depend on the aspect ratio of the dimer. We employ event-driven simulations based on a detailed treatment of frictional interactions between the dimer and the plate in order to elucidate the nature of the transport mechanism in the drift mode.
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