基于三维有限元的磁流变减振器磁路分析  

Analysis of Magnetic Circuit of MRF Damper Based on Three-dimension Finite Element

作　　者：贾永枢[1] 翁茂荣[1] 周孔亢[2] 徐兴[3] 

机构地区：[1]浙江工贸职业技术学院,温州325003 [2]江苏大学汽车与交通工程学院,镇江212013 [3]江苏大学汽车工程研究院,镇江212013

出　　处：《系统仿真学报》2014年第4期931-935,共5页Journal of System Simulation

基　　金：国家自然科学基金资助项目(51105177);温州市科技计划资助项目(G20090126)

摘　　要：介绍一种汽车双筒磁流变减振器的非旋转体活塞结构,针对活塞的非旋转体结构特点,应用ansys有限元分析软件基于单元边法的Solid117单元建立三维有限元磁路仿真模型,进行三维静态磁场分析。设计制造了非旋转体活塞结构,对活塞阻尼通道进行磁路试验,对比磁路的三维仿真与试验数据基本吻合,结果表明磁路三维仿真方法是正确的。利用建立的磁路三维有限元模型,分析了活塞的设计参数对阻尼通道磁场以及整个磁路分布的影响,应用相对灵敏度分析法比较各参数对阻尼通道磁感应强度的影响大小和权重。研究表明,活塞磁极长度对磁场影响最大;流通阀孔半径对磁场影响最小。The structure of a non-rotary body piston of vehicle twin-tube MRF damper was introduced. According to the non-rotary body characteristics of piston, a three-dimensional finite element magnetic circuit simulation model was established with the edge-based Solid117 element of ANSYS, and a three-dimensional static magnetic field was analyzed. With electromagnetic piston of the MRF damper designed and manufactured, the piston damping channel magnetic circuit was tested which turned out to show that the three-dimensional simulation of the magnetic circuit is consistent with the experimental data, and three-dimensional simulation of the magnetic circuit is accurate. Using the established three-dimensional finite element, the affect caused by magnetic circuit design parameters on the damping channel magnetic field was analyzed, while each parameter influence weight on magnetic field was compared based on relative sensitivity analysis. The results show that the piston pole length has the most influence while the circulation valve hole radius has the least influence on magnetic field.

关 键 词：磁流变减振器 三维有限元 磁路 非旋转体 

分 类 号：TF125.8[冶金工程—粉末冶金]