基于离散元法与正交试验的齿板破碎力研究  

Study on Liner Crushing Force Based on Discrete Element Method and Orthogonal Experiment

作　　者：母福生[1] 朱贤云[1] 谢海庆 赵海鸣[1] 

机构地区：[1]中南大学机电工程学院,湖南长沙410083

出　　处：《计算机仿真》2014年第11期217-221,共5页Computer Simulation

基　　金：国家科技支撑计划课题(2012BAH11F01)

摘　　要：研究颚式破碎机齿板齿形对破碎力的影响与齿形参数择优问题。破碎力直接影响破碎机的碎矿功率与企业的经济效益,获得齿形对破碎力的影响规律进而得到最优齿形成为重要课题,以往的研究未将齿形参数多因素协同考虑。为解决上述问题,提出离散元法,采用Hertz-Mindlin黏结接触模型,结合正交试验设计进行数值仿真,获得齿形参数多因素对破碎力的综合影响规律,对仿真结果进行直观分析和方差分析,获得最优齿形参数组合。仿真结果表明,齿底宽是影响破碎力的主要因素,其次是齿距与齿形角,以优化的齿形齿板进行仿真,其破碎力低于正交试验的最小破碎力,为颚式破碎机的设计、改造提供了方法借鉴和数据参考。This paper deals with liner tooth shape and tooth parameter selection for jaw crusher. Since rushing force affects power consumption for crushers and economical profit for enterprises, the effect of tooth parameters and the optimized parameter group are obtained. A discrete element method is applied through orthogonal experiment with Hertz-Mindlin Contact Model with bonding. The effect of tooth shape on crushing force is obtained through simulation. And optimized parameter group is obtained through intuitive and variance analysis. Simulation results show that tooth base width is the most important factor to affect crushing force. Another factor is tooth pitch and the last is tooth shape angle. The crushing force of optimized tooth shape is smaller than those of orthogonal experiments. This application of the proposed methods provides preference for tooth shape optimization.

关 键 词：颚式破碎机 齿形 破碎力 离散元法 正交试验 

分 类 号：TD451[矿业工程—矿山机电]