| SIMPLE MEASUREMENT OF RESTITUTION COEFFICIENT OF IRREGULAR PARTICLES |
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| 作者姓名： | TinghuaLi JiayuanZhang WeiGe |
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| 作者单位： | Multi-PhaseReactionLaboratory,InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100080,P.R.China |
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| 摘 要： | Restitution is an important physical and mechanical property of granular materials. However, measuring its values in instantaneous collisions between particles is very difficult, especially for ore particles of irregular shapes. In this paper, restitution is measured indirectly and statistically with two cameras recording from different angles the trajectories of the ore particles rebounding from a steel plate. The momenta of the particles prior to and after the collision are calculated from the trajectories to give the restitutions of these collisions. The restitution between ore particles is then derived from the restitution of a steel ball with the steel plate measured in the same way. The approach has been proved to be practical and reliable for a variety of ore particles with moderate restitutions.
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| 关 键 词： | 金属矿石 测量方法 恢复作用 晶粒材料 力学仿真 |
SIMPLE MEASUREMENT OF RESTITUTION COEFFICIENT OF IRREGULAR PARTICLES |
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| TinghuaLi JiayuanZhang WeiGe.SIMPLE MEASUREMENT OF RESTITUTION COEFFICIENT OF IRREGULAR PARTICLES[J].China Particuology,2004,2(6):274-275. |
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| Authors: | Tinghua Li Jiayuan Zhang and Wei Ge Multi-Phase Reaction Laboratory |
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| Institution: | Tinghua Li,Jiayuan Zhang and Wei Ge* Multi-Phase Reaction Laboratory,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100080,P. R. China *Author to whom correspondence should be addressed. E-mail: wge@home.ipe.ac.cn |
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| Abstract: | Restitution is an important physical and mechanical property of granular materials. However, measuring its values in instantaneous collisions between particles is very difficult, especially for ore particles of irregular shapes. In this paper, restitution is measured indirectly and statistically with two cameras recording from different angles the trajectories of the ore particles rebounding from a steel plate. The momenta of the particles prior to and after the collision are calcu- lated from the trajectories to give the restitutions of these collisions. The restitution between ore particles is then derived from the restitution of a steel ball with the steel plate measured in the same way. The approach has been proved to be practical and reliable for a variety of ore particles with moderate restitutions. |
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| Keywords: | granular material ore restitution measurement |
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