三工作面旋转式磁流变阻尼器磁路设计与性能分析

Magnetic Circuit Design and Performance Analysis of Three Working Surface Rotory Magnetorheological Damper

设计了一种新型结构的旋转式磁流变阻尼器。设计了新的磁流变阻尼器磁路结构,使得转子的两个端面和圆柱面均作为工作面,在不增大转子体积的情况下,有效增加了转子的工作面积。基于磁流变液与磁芯材料特性,对阻尼器进行了磁路设计,获得了阻尼器的相关机械参数与电气参数。针对阻尼器结构特点,应用有限元法,建立了磁流变阻尼器的有限元模型,并对其进行了电磁场分析,得到了阻尼器模型的电磁场物理量。结合有限元分析结果与磁流变液的本构关系,获得了磁流变阻尼器的屈服力矩—电流力学特性。

A new structure rotary magnetorheological damper is designed. The new magnetic cir- cuit structure of the magnetorheological damper is developed, as the result two end surfaces and the cylindrical surface of the rotor became the working surface, then the working surface is increased with the same volume of the rotor. Based on the property of magnetorheological fluid and magnetic core ma- terial, the magnetic circuit of damper is designed, the mechanical and the electric parameters of the damper are calculated. Depending on the characteristics of the magnetorheological damper structure, the finite element model of the magnetorheological damper is built by using finite element method, the electromagnetic field analysis is performed, then magnetic field quantities of the damper model are got. At last, the magnetorheological damper mechanics property of yield torque and current is work out with the results of the magnetic analysis and the constitutive relations.