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首页> 外文期刊>Zeitschrift fur Physik, B. Condensed Matter >Behavior of one inelastic ball bouncing repeatedly off the ground
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Behavior of one inelastic ball bouncing repeatedly off the ground

机译：一个非弹性球反复从地面弹跳的行为

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摘要

An experimental study of the behavior of one bead bouncing repeatedly off a static flat horizontal surface is presented. We observe that the number of bounces made by the bead is finite. When the duration between two successive bounces becomes of the order of the impact duration, the bead no longer bounces but oscillates on the elastically deformed surface before coming to rest. This transition is explained with a modified Hertz interaction law in which gravity is taken into account during the interaction. For each bounce, measurement of both the duration of collision and the restitution coefficient have been done. The effective restitution coefficient is essentially constant and close to 1 during almost all bounces before decreasing to zero when the impact velocity vanishes. This is due to an interplay between gravity and viscoelastic dissipation.
机译：提出了一个珠子从静态平坦水平面反复弹跳的行为的实验研究。我们观察到，珠子弹跳的次数是有限的。当两次连续弹跳之间的持续时间达到撞击持续时间的数量级时，胎圈不再弹跳，而是在弹性变形的表面上振荡，然后停止。用修正的赫兹相互作用定律解释了这种转变，其中在相互作用过程中考虑了重力。对于每次弹跳，均已测量了碰撞持续时间和恢复系数。有效恢复系数基本上是恒定的，在几乎所有反弹期间都接近于1，然后在冲击速度消失时减小为零。这是由于重力和粘弹性耗散之间的相互作用。

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