Research on Material Impact Properties of Vibrating Screen Based on DEM-MBD-FEM
The numerical simulation of a three-axis elliptical vibrating screen machine is carried out by combining discrete element method with multi-body dynamics,and the finite element method is intro-duced to analyze the screen body under the impact of materials.The influence of feeding speed on screening performance and impact performance is studied by single factor test.The results show that when the feeding speed is 4～8 kg/s,the screening efficiency increases first with the increase of feeding speed,and when the feeding speed increases further,the screening efficiency decreases.In the steady state,the average velocity of the material at the discharge end continues to decrease with the increase of the feeding speed.When the feeding speed is 6 kg/s,the screening efficiency is 78.16%.The relationship between the quality of the mate-rial on the screen and the impact force and the feeding speed is similar to the positive correlation.The defor-mation and stress of the screen and the side plate increase with the increase of the impact force.The research results can provide reference for the design and engineering application of vibrating screen.
elliptical vibrating screenimpact forcediscrete element couplingscreening perfor-mance
万方数据
维普
