Measurements of collisional properties of spheres using high-speed video analysis

被引：176

作者：

Labous, L ^{[1
]}

Rosato, AD ^{[1
]}

Dave, RN ^{[1
]}

机构：

[1] NEW JERSEY INST TECHNOL, PARTICLE TECHNOL CTR, NEWARK, NJ 07102 USA

来源：

PHYSICAL REVIEW E | 1997年 / 56卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.56.5717

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 [等离子体物理]; 080103 [流体力学]; 080704 [流体机械及工程];

摘要：

In this paper we report measurements of collisional properties of spheres using high-speed video analysis. These results agree with a simple collision operator. We study the size and velocity dependences of the coefficient of restitution in the normal direction. The experimental data are compared with the relevant models of energy dissipation and show the existence of two dissipation regimes. For large impact velocities a plastic deformation model is in good agreement with our measurements, while for smaller velocities a model of viscoelastic dissipation gives qualitative agreement.

引用

页码：5717 / 5725

页数：9

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