Research on performance of a laboratory-scale SAG mill based on DEM-EMBD

Liu, Zhengbin; Wang, Guoqiang; Guan, Wei; Guo, Jianbo; Sun, Gang; Chen, Zeren

doi:10.1016/j.powtec.2022.117581

Cited by 6 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the explicit time integration method implemented in the EDEM, multiple time steps are typically required to simulate the same periods as the individual time steps of RecurDyn. Therefore, the time steps may differ between the two solvers, but the simulation steps are the same [19]. Considering the actual computing power of the laboratory computer, the time steps of EDEM and RecurDyn were set to 1 Â 10 À5 s and 0.01 s, respectively, with a total simulation time of 30 s.…”

Section: Bi-directional Coupling Settingmentioning

confidence: 99%

Effects of cutting head load on fatigue life of bolter miner cutting arm

Li¹,

Wang²,

Wang³

et al. 2023

Mechanics & Industry

View full text Add to dashboard Cite

In the operation of bolter miners, the cutting arm is an essential and weak part and its fatigue life directly affects its performance. This study aimed to investigate the influence of the cutting head load on the fatigue life of a cutting arm using the DEM-MFBD (Discrete Element Method-Multi Flexible Body Dynamics) bi-directional coupling technique. The EJM340 bolter miner was chosen as the research object, and a three-dimensional solid model of the bolter miner was built using the RecurDyn software. The cutting arm was flexibly modelled, and the tunnel model was built using the EDEM software. The motion parameters of the bolter miner and cutting head load were transferred through the bi-directional coupling interface to obtain the loads and stress parameters during the entire tunnel cutting process. Based on the stress-time variation, the fatigue life of the cutting arm was calculated, the overall damage and crack initiation locations were obtained, and the minimum number of cutting arm cycles was determined. The accuracy of the virtual model is verified through field experiments. The analysis results indicated that the crack emergence location and fatigue life obtained from the simulation were in agreement with the experimental results.

show abstract

Section: Bi-directional Coupling Settingmentioning

confidence: 99%

Effects of cutting head load on fatigue life of bolter miner cutting arm

Li¹,

Wang²,

Wang³

et al. 2023

Mechanics & Industry

View full text Add to dashboard Cite

show abstract

“…The results showed that the rock shape has a greater influence on the big size classes in the charge. In the research of Liu et al [18], the electrical system and multi-body dynamics model (EMBD) was combined with DEM method to explore the performance of a semi-autogenous (SAG) mill under various conditions. It was shown that the fluctuation of motor load torque, current, and mill speed in the initial stage is very greater than that in the stable running stage.…”

Section: Introductionmentioning

confidence: 99%

Effect of Milling Parameters on DEM Modeling of a Planetary Ball Mill

Mhadhbi¹

2023

AMPC

View full text Add to dashboard Cite

The effects of the milling parameters involving shape of powder particles, rotation speed, and ball-to-powder diameter (BPDR) on DEM modeling in the planetary ball mill were investigated. BPDR was varied from 1 to 10. The results revealed that the size and shape of the powder particles do not give a significant change in simulation results when BPDR attains maximum value of 10. The increasing of BPDR leads to the increase of simulation time and size. Hence, the effect of change of the powder particle shape on the calculated data size is not significant. The results also revealed that the increasing rotation speed increases impact energy between powder particles.

show abstract

“…The discrete element method (DEM), as a professional numerical simulation method of the multi-particle system [1][2][3][4][5], has become an important means of agricultural machinery design [6][7][8][9][10], the pharmaceutical industry [11], and other industries [12][13][14]. To accurately optimize the performance of agricultural machinery based on the DEM, in this paper, it is necessary to build a DEM analysis model of maize seed particle assemblies [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Performance Optimization of a Spoon Precision Seed Metering Device Based on a Maize Seed Assembly Model and Discrete Element Method

Chen,

Xue,

Guan

et al. 2023

Processes

Self Cite

View full text Add to dashboard Cite

To improve the sowing performance of the spoon wheel maize seeding machinery, in this paper, two varieties of maize seed are selected as examples. The maize spoon precision seed metering device, a core component of the spoon wheel seeding machinery, is used as the research object. The maize seed assembly model is first established based on the maize seed assembly modeling method. Its validity is verified by the sowing experiment and corresponding DEM simulation under the different revolving speeds of the seed metering wheel. Secondly, the performance of the spoon precision seed metering device is optimized by integrating the maize seed assembly model and multivariate nonlinear regression method. Therefore, the number of sub-spheres of the horse tooth, spherical cone, and spheroid maize seed model are 10–14, 18, and 6, respectively. The results show that the performance of the seed metering device improved when the revolving speed of the seed metering wheel, handing angle, and seed spoon radius are 25 r/min, 40°, and 7 mm, respectively. There is good agreement between the expected results and experimental ones with relative errors of less than 5%, and the optimized seed metering device facilitates the process of seed guiding and seed delivery during the sowing process.

show abstract

Research on performance of a laboratory-scale SAG mill based on DEM-EMBD

Cited by 6 publications

References 23 publications

Effects of cutting head load on fatigue life of bolter miner cutting arm

Effects of cutting head load on fatigue life of bolter miner cutting arm

Effect of Milling Parameters on DEM Modeling of a Planetary Ball Mill

Performance Optimization of a Spoon Precision Seed Metering Device Based on a Maize Seed Assembly Model and Discrete Element Method

Contact Info

Product

Resources

About