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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。
A kind of non-rotating body piston structure of automobile double-cylinder magnetorheological damper is introduced. According to the non-rotating body structure of the piston, a three-dimensional finite element magnetic circuit simulation model is established by using Solid117 unit based on unit edge method with ansys finite element analysis software. Three-dimensional static magnetic field analysis. The piston structure of non-rotating body was designed and manufactured, and the piston test was carried out on the piston damping channel. The three-dimensional simulation of the magnetic circuit was in good agreement with the experimental data. The results showed that the three-dimensional magnetic circuit simulation method was correct. The influence of the design parameters of the piston on the magnetic field of the damping channel and the distribution of the magnetic circuit was analyzed. The relative sensitivity analysis method was used to compare the influence of each parameter on the magnetic induction intensity of the damping channel. The results show that the length of the piston pole has the greatest influence on the magnetic field; the radius of the circulation valve hole has the least influence on the magnetic field.