收稿日期: 2022-03-06
网络出版日期: 2022-10-09
基金资助
国家自然科学基金资助项目(51605040);陕西省自然科学基金资助项目(2021JM-166)
Dynamic Characteristics Analysis of Vibrating Screen Based on System and Particle Coupling Dynamics
Received date: 2022-03-06
Online published: 2022-10-09
Supported by
the National Natural Science Foundation of China(51605040);the Shaanxi Natural Science Foundation of China(2021JM-166)
为揭示振动筛振动与物料颗粒运动的相互作用,了解振动参数对系统动态特性的影响,建立了振动筛系统动力学与颗粒动力学的耦合分析模型,实现了振动筛系统筛分过程的实时双向耦合仿真,有效提高了仿真模型的精度。根据振动筛分试验计算出筛分产品的实际产率,得到了稳定状态下各层筛网上的颗粒分布情况。相较于未耦合模型,考虑振动筛与颗粒动力学耦合的模型能获得更为精确的受力分析,且计及了筛体对物料的抛掷作用,避免了传统仿真中各层筛面的颗粒堆积,与实际筛分情况更相符。同时,分析也表明物料最大冲击力不随筛网层数的下移而降低。文中最后研究了物料冲击力随振动筛主要参数的变化规律,发现:物料冲击力的大小随筛面面积呈同方向改变,筛网长度的变化会造成物料驻留时间的变化,从而影响冲击力;物料冲击力的大小随筛面倾角的增大而减小;当振动方向角在57°~90°范围内变化时,冲击力呈倒V字型变化。文中研究结果为振动筛的减振降噪动态优化设计提供了理论指导。
贺朝霞, 王星哲, 邢增飞, 等 . 基于系统动力学与颗粒动力学耦合的振动筛动态特性分析[J]. 华南理工大学学报(自然科学版), 2023 , 51(1) : 41 -50 . DOI: 10.12141/j.issn.1000-565X.220104
In order to analyze the interaction between the vibration of vibrating screen and the movement of particles and reveal the influence of vibration parameters on the dynamic characteristics of the system, this paper establishes a model for the coupling of vibration sieve system dynamics and particle dynamics. By using this model, real-time bi-directional coupling simulation of screening process can be realized, and the accuracy of the simulation model is effectively improved. The steady-state particle distribution at each layer of screen is obtained based on the actual screening yield which is calculated in terms of screen test. As compared with the uncoupled model, the model considering the coupling of vibrating screen and particle dynamics can obtain more accurate force analysis, and enhance the material throwing of the sieve body, avoiding the particle accumulation of each layer in the traditional simulation, which is more consistent with the actual screening situation. Meanwhile, the coupling analysis also indicates that the maximum impact force of materials does not decrease as the number of screen layers decreases. Finally, the variation law of material impact force with the main parameters of vibrating screen is studied. The results indicate that the impact force of the particles not only varies as the proportion of screen surface area, but also relies on the residence time of the particles on the screen; the impact force of the particles decreases with the increase of the inclination angle of screen surface. When the vibration direction angle is within 57°to 90°, the magnitude of the impact force shows an inverted V-shape. The results provide a theoretical guidance for the dynamic optimization design and noise reduction of vibration screen.
| 1 | 夏绪辉,荆为民,张泽琳,等 .振动筛仿真研究、应用现状及发展趋势[J].中南大学学报(自然科学版),2020,51(10):2689-2706. |
| 1 | XIA Xuhui, JING Weimin, ZHANG Zelin,et al .Simulation research,application status and development trend of vibrating screen[J].Journal of Central South University (Science and Technology),2020,51(10):2689-2706. |
| 2 | 赵环帅 .我国振动筛的市场现状及发展对策[J].矿山机械,2018,46(4):1-6. |
| 2 | ZHAO Huanshuai .Status of domestic vibrating screen market as well as development countermeasures[J].Mining & Processing Equipment,2018,46(4):1-6. |
| 3 | MAKINDE O A, RAMATSETSE B I, MPOFU K .Review of vibrating screen development trends:linking the past and the future in mining machinery industries[J].International Journal of Mineral Processing,2015,145:17-22. |
| 4 | YIN Z, ZHANG H, HAN T .Simulation of particle flow on an elliptical vibrating screen using the discrete element method[J].Powder Technology,2016,302:443-454. |
| 5 | CHEN B, YAN J, MO W,et al .DEM simulation and experimental study on the screening process of elliptical vibration mechanical systems[J].Journal of Vibroengineering,2019,21(8):2025-2038. |
| 6 | 刘义伦,苏家辉,赵先琼 .基于离散元法的振动筛的筛分效率研究[J].东北师大学报(自然科学报),2018,50(4):78-83. |
| 6 | LIU Yi-lun, SU Jia-hui, ZHAO Xian-qiong .The study of vibrating screen efficiency based on discrete element method[J].Journal of Northeast Normal University (Natural Science Edition),2018,50(4):78-83. |
| 7 | MONCADA M M, RODRíGUEZ C G, RUTA G .Dynamic modeling of a vibrating screen considering the ore inertia and force of the ore over the screen calculated with discrete element method[J].Shock and Vibration,2018(12):1714738/1-13. |
| 8 | YANG X, WU J, JIANG H,et al .Dynamic modeling and parameters optimization of large vibrating screen with full degree of freedom[J].Shock and Vibration,2019(1):1915708/1-12. |
| 9 | 彭利平,刘初升,赵跃民,等 .混联弹簧减振系统下自同步直线振动筛的动力学特性[J].煤炭学报,2014,39(10):2114-2120. |
| 9 | PENG Li-ping, LIU Chu-sheng, ZHAO Yue-min,et al .Dynamic characteristics of a self-synchronous linear vibrating screen with hybrid-spring isolators[J].Journal of China Coal Society,2014,39(10):2114-2120. |
| 10 | 程加远,任廷志,张子龙,等 .基于多体动力学与离散元耦合的惯性圆锥破碎机动态性能研究[J].振动与冲击,2021,40(8):98-109,130. |
| 10 | CHENG Jiayuan, REN Tingzhi, ZHANG Zilong,et al .A study on dynamic performance of an inertia cone crusher based on multi-body dynamics and discrete element coupling method[J].Journal of Vibration and Shock,2021,40(8):98-109,130. |
| 11 | WU Y-R, Y-C CHUNG, WANG I-C .Two-way coupled MBD-DEM modeling and experimental validation for the dynamic response of mechanisms containing damping particles[J].Mechanism and Machine Theory,2021,159:104257/1-38. |
| 12 | SHI S, GAO L, CAI X,et al .Effect of tamping operation on mechanical qualities of ballast bed based on DEM-MBD coupling method[J].Computers and Geotechnics,2020,124:103574/1-10. |
| 13 | LIU C, ZHANG S, ZHOU H,et al .Dynamic analysis and simulation of four-axis forced synchronizing banana vibrating screen of variable linear trajectory[J].Journal of Central South University,2012,19(6):1530-1536. |
| 14 | JIANG H, ZHAO Y, DUAN C,et al .Dynamic characteristics of an equal-thickness screen with a variable amplitude and screening analysis[J].Powder Technology,2017,311:239-246. |
| 15 | 季顺迎 .计算颗粒力学及工程应用[M].北京:科学出版社,2018:43-55. |
| 16 | ELSKAMP F, KRUGGEL-EMDEN H .Review and benchmarking of process models for batch screening based on discrete element simulations[J].Advanced Powder Technology,2015,26(3):679-697. |
| 17 | 孙其诚,王光谦 .颗粒物质力学导论[M].北京:科学出版社,2009:31-35. |
| 18 | 刘春 .地质与岩土工程矩阵离散元分析[M].北京:科学出版社,2019:4-6. |
| 19 | BARRIOS G K P, CARVALHO DE R M, KWADE A,et al .Contact parameter estimation for DEM simulation of iron ore pellet handling[J].Powder Technology,2013,248(11):84-93. |
| 20 | 陆永海 .选煤实际产率计算方法初探[J].煤质技术,1997(5):30-32,35. |
| 20 | Lu Yonghai .Preliminary study on calculation method of actual yield of products from coal preparation[J].Coal Quality Technology,1997(5):30-32,35. |
| 21 | 贺朝霞,胡明建,杨龙飞 .沥青搅拌设备多层振动筛分效率计算及影响规律研究[J].噪声与振动控制,2018,38(3):203-209. |
| 21 | HE Zhaoxia, HU Mingjian, YANG Longfei .Analysis of screening efficiency of multi-layer vibrating screens of asphalt mixing equipment[J].Noise and Vibration Control,2018,38(3):203-209. |
| 22 | 李杨杨,贺朝霞,宋绪丁,等 .沥青搅拌设备振动筛系统动力学分析及其参数影响研究[J].计算力学学报,2015,32(4):565-570. |
| 22 | LI Yang-yang, HE Zhao-xia, SONG Xu-ding,et al .Dynamic analysis and influence study of structure parameters on the asphalt mixing plant vibration screen system[J].Chinese Journal of Computational Mechanics,2015,32(4):565-570. |
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