主轴式滚磨光整加工EDEM-FLUENT耦合仿真模拟分析研究  

Study on EDEM-FLUENT Coupling Simulation Analysis of Spindle Barrel Finishing

作　　者：赵恺 王娜 杨胜强[1,3] 李文辉 ZHAO Kai;WANG Na;YANG Sheng-qiang;LI Wen-hui(College of Mechanical and Vehicle Engineering of Taiyuan University of Technology,Shanxi Taiyuan 030024,China;College of Aeronautics and Astronautics,Taiyuan University of Technology,Shanxi Jinzhong 030600,China;Shanxi Key Laboratory of Precision Machining,Shanxi Taiyuan 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,山西太原030024 [2]精密加工山西省重点实验室,山西太原030024 [3]太原理工大学航空航天学院,山西晋中030600

出　　处：《机械设计与制造》2023年第7期6-11,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金—矿用重载齿轮滚磨光整加工颗粒流场的介质多尺度行为研究(U1510118);山西省自然科学基金—基于粒/群聚类参数集的滚抛磨块评价模型构建及反馈制备策略研究(201801D111002)。

摘　　要：考虑到主轴式滚磨光整加工实际工况是湿式环境,为实现该环境的下主轴式滚磨光整加工工艺的仿真模拟,首先将滚抛磨块按离散相处理,基于EDEM软件的Hertz-Mindlin模型对主轴式滚磨光整加工工艺进行仿真模拟,分析滚抛磨块运动情况,然后综合考虑滚抛磨块与液体介质的双向耦合作用,采用EDEM-FLUENT的联合仿真,通过欧拉-欧拉法建立滚筒内固液两相流混合模型,探究不同加工环境下滚抛磨块与工件接触速度大小;最后通过实验测试获得滚抛磨块与工件之间的接触力,并与仿真模拟做对比分析,以滚抛磨块与工件之间的接触力为评价指标,探究滚抛磨块对工件的作用规律,验证耦合仿真的有效性,为实际工程应用提供指导。结果表明:滚抛磨块成漩涡状运动轨迹,与工件接触时,运动轨迹发生变化,沿工件滑擦一段距离恢复圆周运动;湿式滚抛磨块速度小于干式情况,且靠近筒壁一侧磨块滑擦速度最大,正对磨块流处速度最小;工件正对磨块流处与滚抛磨块的接触力最大,靠近筒壁一侧次之,靠近筒中心一侧最小;滚筒转速较工件加工位置对于滚抛磨块与工件之间的接触力影响小,正对磨块流处滚抛磨块与工件之间主要发生碰撞作用,工件两侧以滑擦作用为主,验证了EDEM-FLUENT耦合仿真可用于主轴式滚磨光整加工固液两相流模拟,该方法为进一步探究滚抛磨块与复杂形状工件的接触研究提供参考。Considering that the actual working condition of spindle barrel finishing is a wet environment.In order to realize the simulation of the spindle barrel finishing process in this environment.Firstly,the rolling polishing medium are treated as discrete phases,and the spindle barrel finishing process is simulated based on the Hertz-Mindlin model of EDEM software,and the movement of the rolling polishing medium are analyzed.Then comprehensively consider the two-way coupling effect of the rolling polishing medium and the liquid medium,using EDEM-FLUENT co-simulation,and establishing the solid-liquid two-phase flow mixing model in the drum through Euler-Euler method,and the contact velocity between the rolling polishing medium and the workpiece under different processing environments was explored.Finally,the contact force between the rolling polishing medium and the workpiece is obtained through experimental tests,and compared with simulation.Taking the contact force between the rolling polishing medium and the workpiece as the evaluation index,the law of the effect of the rolling polishing medium on the workpiece is explored,the effectiveness of the coupled simulation is verified,and guidance is provided for practical engineering applications.The results show that:the rolling polishing medium forms a vortex motion trajectory.When it comes into contact with the workpiece,the motion trajectory changes,sliding along the workpiece for a certain distance to resume circular motion.The wet rolling polishing medium speed is lower than that of the dry type,and the sliding speed of the rolling polishing medium on the side of the cylinder wall is the largest,and the speed facing the rolling polishing medium is the smallest.The contact force between the workpiece and the rolling polishing medium where the workpiece is facing the flow of the rolling polishing medium is the largest,followed by the side close to the cylinder wall,and the side close to the cylinder center is the smallest.The speed of the drum has less influence on th

关 键 词：干式 湿式 主轴式滚磨光整加工 EDEM EDEM-FLUENT联合仿真 

分 类 号：TH16[机械工程—机械制造及自动化] TH161