Modification of Discrete Element Contact Parameters of Coal Bulks Based on Rotary Transport Test

被引：4
|
作者：
Li B. [1 ,2 ]
Wang Z.-S. [1 ,2 ]
Liang C. [1 ,2 ]
Wang X.-W. [1 ,2 ]
机构：
[1] College of Mechanical and Transportation Engineering, Taiyuan University of Technology, Taiyuan
[2] Shanxi Key Laboratory of Fully Mechanized Mining Equipment, Taiyuan
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2021年 / 42卷 / 10期
关键词：
Coal bulk; Contact parameters; Discrete element method; Plackett-Burman test; Response surface method;
D O I：
10.12068/j.issn.1005-3026.2021.10.010
中图分类号：
学科分类号：
摘要：
To obtain the accurate discrete element simulation results of scraper conveyors, the contact parameters of coal bulks were corrected by the response surface method based on the rotary transport test. The Plackett-Burman test was used to investigate the effect of contact parameters on the force and stacking angles, and it was found that the static friction coefficient of coal-steel and the friction coefficient of coal-coal have significant positive effects. According to the results of the climbing test, the Box-Behnken test was planned with force and stacking angle as the response value, and the quadratic regression polynomials between forces, stacking angles and significant terms were established respectively. The optimal parameters were obtained with the measured data as the target value and the results showed that the static friction coefficient of coal-steel is 0.401, the static friction coefficient of coal-coal is 0.333, and the rolling friction coefficient of coal-coal is 0.041. The accuracy of the parameters was verified by the rotary test under different transportation conditions, which provides a reference for the discrete element study of scraper conveyors. © 2021, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：1435 / 1443
页数：8
相关论文
共 26 条
  • [1] Wang X W, Li B, Wang S W, Et al., The transporting efficiency and mechanical behavior analysis of scraper conveyor, Proceedings of the Institution of Mechanical Engineers.Part C:Journal of Mechanical Engineering Science, 232, 18, pp. 3315-3324, (2017)
  • [2] Dong Y S, Si F Q, Cao Y, Et al., A new mechanistic model for abrasive erosion using discrete element method[J], Powder Technology, 380, pp. 486-496, (2021)
  • [3] Zhang P L, Li B, Wang X W, Et al., The loading characteristics of bulk coal in the middle trough and its influence on rigid body parts[J], Strojniski Vestnik-Journal of Mechanical Engineering, 66, 2, pp. 114-126, (2020)
  • [4] Wang X W, Li B, Yang Z J., Analysis of the bulk coal transport state of a scraper conveyor using the discrete element method, Journal of Mechanical Engineering, 64, 1, pp. 37-46, (2018)
  • [5] Curry D, Deng Y., Optimizing heavy equipment for handling bulk materials with Adams-Edem co-simulation[C], International Conference on Discrete Element Methods, pp. 1219-1224, (2016)
  • [6] Xia R, Wang X W, Li B, Et al., Discrete element method-(DEM-)based study on the wear mechanism and wear regularity in scraper conveyor chutes[J], Mathematical Problems in Engineering, 2019, pp. 1-12, (2019)
  • [7] Coetzee C., Calibration of the discrete element method:strategies for spherical and non-spherical particles, Powder Technology, 364, pp. 851-878, (2020)
  • [8] Smith W, Peng H., Modeling of wheel-soil interaction over rough terrain using the discrete element method[J], Journal of Terramechanics, 50, 5, pp. 277-287, (2013)
  • [9] Coetzee C J., Calibration of the discrete element method and the effect of particle shape[J], Powder Technology, 297, pp. 50-70, (2016)
  • [10] Li Tie-jun, Wang Xue-wen, Li Bo, Et al., Optimization method for coal particle model parameters based on discrete element method, China Powder Science and Technology, 24, 5, pp. 6-12, (2018)
123