物流管道内表面磁力研磨的数值仿真

由于物流管道内表面磁力研磨的特殊性，管道及励磁机构都不宜作高速旋转运动．提出了用电磁励磁产生回转磁场实现非机械方式产生相对运动的方法，并对励磁机构以简化模型为基础进行了数值仿真，使研磨压力、磁驱动力和简化模型的相关参数建立了数值上的关联，同时对数值计算的结果进行了具体的分析．研究结果表明：磁驱动力随间隙及相对位移增大都是先上升后下降，在大间隙区域内该力随相对位移变化趋缓；研磨压力随相对位移单边下降，在小间隙区域对研磨压力缺乏表达能力．

Numerical Simulation of Inner Surface Magnetic Abrasive Finishing

Due to the special capability of the inner surface magnetic finishing, long tubes and excitation setup can not rotate quickly. This paper proposed a method in which rotating magnetic field by means of electromagnetic exciter provides relative movement between inner surface of tube and magnetic brush. Numerical simulation was made on the basis of the simplified exciter model. Magnetic forces and some relative parameters of the model are related. Analyses are made on the numerical values. The experimental results show that the driving force increases first then decreases as delaying distance and gap length increase. But the driving force varies slowly within long gap length. The magnetic force decreases as delaying distance increases within long gap length.