液压与气动2025，Vol.49Issue(7)：12-20,9.DOI:10.11832/j.issn.1000-4858.2025.07.002
大直径宽温域磁性液体密封耐压性能分析
Analysis on Pressure Resistance of Magnetic Fluid Seal with Large Diameter in a Wide Range of Temperature
摘要
Abstract
Magnetic fluid seals with large diameter are prone to deformation in the environment with a wide temperature range,resulting in a decrease of its maximum working pressure,which means a decline in its pressure resistance performance.In this research,a pressure resistance formula for magnetic fluid seals with the consideration of temperature effects is derived,and the saturation magnetization of magnetic fluids at different temperatures are measured and the simulation analysis of temperature-structure-magnetic field coupling on magnetic fluid seals with large diameter in a wide temperature range is conducted to address the above problems.The structural deformation of the seal at the temperature range of-60～+80℃is analyzed.Furthermore,the magnetic field distribution after the seal deformation is analyzed and the theoretical pressure resistance values of magnetic fluid seals at different temperatures are calculated.Thereby,the reason for changes of pressure resistance of magnetic fluid seals is clarified,which provides a new design method for magnetic fluid rotary seals with large diameter in a wide temperature range.The sealing experiments verify that the magnetic fluid seals designed using this method meet the sealing design requirements.关键词
磁性液体/磁性液体密封/有限元分析/最高工作压力Key words
magnetic fluid/magnetic fluid seal/finite element analysis/maximum working pressure分类
机械制造引用本文复制引用
郭昀奇,李德才,戚志强,李柳..大直径宽温域磁性液体密封耐压性能分析[J].液压与气动,2025,49(7):12-20,9.基金项目
国家自然科学基金(51735006,U1837206,51927810) （51735006,U1837206,51927810）
北京市自然科学基金(3182013) （3182013）
