关键词: 筛分, 数值模拟, 离散元法

Abstract: Vibrating screen is presently the most used screening machinery in engineering and screening performance is a major issue in its design and application. However, the available screening theories can not well solve the issue. A numerical simulation method based on discrete element is presently used in simulating and analyzing the screening. The research practice has proven that it is an efficient tool for granular dynamics analysis. The paper introduces the background of the research on vibrating screen and the basic theory of discrete element method, reviews the application of discrete element method in screening field and discusses the main difficulties in screening simulation and the issues to be solved in its future development.

Key words: Screening, Numerical simulation, Discrete element method