LYU Zhipeng1, 2 ， ZHU Hongwu1 ， ZHANG Si2 ， ZHOU Sizhu2 ， Y. T. FENG3
（1. College of Mechanical and Transportation Engineering， China University of Petroleum （Beijing）， Beijing 102249， China； 2. School of Mechanical Engineering， Yangtze University， Jingzhou 434023， China； 3. College of Engineering， Swansea University， Swansea SA2 8PP， United Kingdom）
Abstract： A discrete element model of the shale shaker was developed base d on the JKR (Johnson-Kendall-Roberts) contact model taking into consideration of viscous forces between contacting particles. A comparative simulation investigation on the migration process of solid particle groups was carried out for linear and elliptical movement trajectories of a shaker. The results show that the particle migration speed for the linear motion is greater than that for the elliptical one. The collision times between the particles are periodic and the collision times of the linear vibration are greater than those of the elliptical vibration. Different particles present obvious stratification, the larger particles are easy to be upper, and the smaller particles are easy to be lower. With the effect of viscous force, particles with the ratio of particle diameter and screen aperture between 0.4 and 0.6 have the greatest filter ratio, while smaller particles with the ratio of particle diameter and screen aperture less than 0.4 are easier to form clusters, which hinders their passing through the screen poles.
Keywords: shale shaker; discrete element method; solid migration; filter ratio
文章编号：1008-5548（2015）06-0017-04
DOI：10.13732/j.issn.1008-5548.2015.06.004
收稿日期：2015-02-07，修回日期：2015-04-27，在线出版时间：2015-12-22。
基金项目：湖北省高等学校科技创新团队计划项目，编号：T200906。
第一作者简介：吕志鹏（1981—），男，博士研究生，研究方向为石油机械设计。 E-mail: xhaihq@126.com。
