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文中以基于挤压模式的外圆车刀磁流变减振装置为基础,根据装置结构设计和电磁学原理,研究其在实际工作过程中施加变电流时磁场的变化进而对整个装置磁路进行分析。利用有限元软件Ansoft maxwell对间隙处进行瞬态磁场分析,得出在不同电流时刻所产生的不同的磁场强度B;而在同一电流时刻,由于线圈结构的设计,在挤压面不同位置产生不同磁场强度。以一个电流变化周期为时间段,选取不同位置来研究其动态磁场的变化,最终确定出在挤压受力面中最大磁场强度的精确分布区。
In this paper, based on the squeeze mode of the external turning lathe MR damper based on device structure design and the principle of electromagnetism, the study of its actual work process changes in the magnetic field when the variable current and then the entire device magnetic circuit analysis. Using finite element software Ansoft maxwell transient magnetic field analysis of the gap, obtained at different current moments generated by the different magnetic field strength B; and at the same current time, due to the coil structure design, in the extrusion surface at different positions have different Magnetic field strength. Taking a period of current variation as a time period, different locations are selected to study the dynamic magnetic field changes, and finally the exact distribution of the maximum magnetic field intensity in the stress surface is determined.