论文部分内容阅读
多极齿形结构的磁流体装置中齿形几何参数的选择是这类装置设计的核心问题．它决定该装置中磁场分布形态，从而影响了密封的质量．采用任意三角形网格划分的有限元法求解描述永磁－软铁系统性质的非线性Ｐｏｉｓｓｏｎ方程，以矢量磁位Ａ为计算量得到磁流体密封装置中工作气隙的磁场分布数据．经多个齿形几何参数的比较，提出了磁流体密封装置的多极齿形结构设计中齿极宽度、槽宽度和槽深度的最佳参数．计算中考虑了磁铁的边缘效应、非线性效应及漏磁效应，计算结果较其他方法更可靠
The choice of the geometry of the tooth geometry in a multi-pole toothed magnetic fluid device is a central issue in the design of such devices. It determines the distribution of the magnetic field in the device, thus affecting the quality of the seal. The nonlinear Poisson equation describing the properties of permanent magnet-soft iron system was solved by using arbitrary triangular mesh finite element method. The magnetic field distribution data of working air gap in the magnetic fluid seal device was obtained by calculating the vector A magnetic field. Based on the comparison of geometric parameters of multiple tooth profiles, the optimal parameters of tooth pole width, groove width and groove depth in multi-pole tooth structure design of the magnetic fluid seal device are proposed. The calculation takes into account the edge effect of the magnet, the nonlinear effect and the leakage effect, the calculation result is more reliable than other methods