基于磁流变柔性辅助支撑装置设计及磁路仿真

Design and Magnetic Circuit Simulation of a Flexible Support Device Based on Magnetorheology

摘要: 在制造业中提高复杂零件的加工精度和工件表面质量一直是技术难题。设计了一种磁流变弹性体辅助支撑装置，该装置能够支撑直径在一定范围内的薄壁套筒零件。使用有限元方法模拟仿真装置中各零件的材料属性、工件厚度、间隙大小以及电流大小等因素对装置工作间隙处磁场的影响，并进行实验验证。基于研究结果，设计合适的参数，磁路仿真表明该装置满足设计要求。最后结合仿真结果用MATLAB对电流与磁感应强度之间的数据关系进行拟合，得到磁感应强度关于电流的三次函数，为进一步研究磁流变弹性体(Magnetorheological elastomers, MRE)辅助支撑动力学建模奠定了基础。

Abstract: It is always a difficult technical problem to improve the machining accuracy and surface quality of complex parts in manufacturing industry. In this paper, a magnetorheological elastomer auxiliary support device is designed to support thin-wall sleeve parts. In order to study the performance of the device, the finite element method is used to simulate the influence of material properties, workpiece thickness, gap size and current size of each part of the simulation device on the magnetic field at the working gap of the device, and the experimental verification is carried out. Based on the research results, the appropriate parameters are designed, and the magnetic circuit simulation shows that the device meets the design requirements. Finally, combining with the simulation re-sults, MATLAB is used to fit the data relationship between current and magnetic induction, and the cubic function of magnetic induction about current is obtained, which lays a foundation for further study of magnetorheological elastomers (MRE) auxiliary support dynamics modeling.