Numerical investigation of a continuous screening process by the discrete element method

2015 ◽  
Author(s):  
Harald Kruggel-Emden ◽  
Frederik Elskamp
Keyword(s):  
Discrete Element Method ◽  
Numerical Investigation ◽  
Discrete Element ◽  
Screening Process ◽  
Element Method

Numerical simulation of particle screening efficiency of large multi-layer vibrating screen based on discrete element method

2021 ◽  
pp. 095440892110606
Author(s):  
Yujia Li ◽  
Peng Zhao ◽  
Li Mo ◽  
Tao Ren ◽  
Minghong Zhang
Keyword(s):  
Discrete Element Method ◽  
Environmental Protection ◽  
Inclination Angle ◽  
Discrete Element ◽  
Physical Parameters ◽  
Screening Process ◽  
Efficient Operation ◽  
Vibrating Screen ◽  
Screening Efficiency ◽  
Element Method

With the increasing requirements for energy conservation and environmental protection, multi-layer vibrating screens have become hot issues. Compared with single-layer vibrating screens, multi-layer vibrating screens has much better performance in terms of processing effect, treatment capacity, and environmental protection. The research on the physical parameters of the multi-layer vibrating screen is of great significance to the actual production. However, analysis and simulation studies of multi-layer vibrating screens are limited. In this paper, the screening process of wet particles on a multi-layer vibrating screen was simulated by using the discrete element method. The characteristics and application scope of the two vibration modes were analyzed. The particle penetration rate, the number of collisions, and the distribution of the particles under 23 combinations of structures and vibration parameters were investigated. The influence of different parameters on screening performance was analyzed. Several optimal combinations of frequency, amplitude and screen inclination angle under different working conditions were obtained. The screening efficiency of the balanced elliptic motion is higher than that of the linear motion. The best combination of the three parameters is 4 mm amplitude, 20 Hz frequency, and 3° inclination angle. The efficiency is higher when the particles follow a distribution of arithmetic on the screen. This study provides a reference for the efficient operation and optimal design of large multi-layer screening equipment.

On Using Discrete Particle Approaches for Simulating the Perforation Process of Concrete Slab by Hard Projectile

2007 ◽  
Vol 353-358 ◽  
pp. 2973-2976 ◽  
Author(s):  
Yu Yong Jiao ◽  
Xiu Li Zhang ◽  
Shui Lin Wang ◽  
Huo Zhen Wu
Keyword(s):  
Discrete Element Method ◽  
Numerical Investigation ◽  
Concrete Slab ◽  
Discrete Element ◽  
Discontinuous Deformation Analysis ◽  
Deformation Analysis ◽  
Discrete Particle ◽  
Discontinuous Deformation ◽  
Element Method

This study is to present a numerical investigation on fragmentation and perforation of concrete slab by hard projectile using discrete particle approaches. Discrete Element Method (DEM) and Discontinuous Deformation Analysis (DDA), the two representative discrete particle approaches, are employed to simulate a normal perforation of concrete slab by a hard ogival-nose shaped projectile, and the phenomena of spalling, plugging and scabbing are reproduced.

Large-scale numerical investigation of solids mixing in a V-blender using the discrete element method

2008 ◽  
Vol 181 (2) ◽  
pp. 205-216 ◽  
Author(s):  
M. Lemieux ◽  
G. Léonard ◽  
J. Doucet ◽  
L.-A. Leclaire ◽  
F. Viens ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Numerical Investigation ◽  
Large Scale ◽  
Discrete Element ◽  
Solids Mixing ◽  
Element Method
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