Complicated motion of particles on vibration screen surface

来源期刊：中国有色金属学报(英文版)1999年第4期

论文作者：赵跃民 刘初升 樊茂明

文章页码：861 - 864

Key words：screen surface; vibration strength; bifurcation and chaos

Abstract: The particles' motion on screen surface was studied by t, he way of nonlinear dynamics. It was found that the particles' motion may be changed from one form to another with its vibration strength. When the vibration strength K is bigger than 1 and smaller than 1. 33, the particles' motion is the bifurcating type;when K is bigger than 1. 33 and smaller than 1. 67, its motion becomes the double bifurcation type; when K is bigger than 1. 67, its motion changes into chaos motion type. On basis of studying all effects of large vibration strength on particles penetrating, it was pointed out that a larger vibration strength K of screen surface will increase the strength of particles' motion, and then increase their probability of penetrating screen surface. A primary theory of particles' motion under large vibration strength for moisture fine coal was established.