磁性液体密封耐压能力参数化分析  

Parametric Analysis of Magnetic Liquid Seal Pressure Resistance

作　　者：张妙恬 晋立丛 李世聪 ZHANG Miaotian;JIN Licong;LI Shicong(School of Emergency Equipment,North China Institute of Science and Technology,Langfang Hebei 065201,China;School of Mechanical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]华北科技学院应急装备学院,河北廊坊065201 [2]清华大学机械工程系,北京100084

出　　处：《润滑与密封》2024年第7期146-152,共7页Lubrication Engineering

基　　金：中央高校基本科研业务费项目(3142024034)。

摘　　要：针对某型飞机磁性液体密封,利用COMSOL有限元分析软件建立不同结构参数的磁性液体密封模型,计算不同密封间隙、极齿宽度、极齿高度、极齿位置、极齿形状下密封的磁场强度差值,进而判断不同磁性液体密封结构的耐压能力。研究结果表明:密封间隙、极齿宽度对磁性液体密封耐压能力影响较大,极齿高度和极齿位置对磁性液体密封耐压能力影响较小;极齿形状为梯形时密封效果最好。通过比较分析,选择最优磁性液体密封结构参数,为磁性液体密封耐压能力研究提供了理论依据。Aimed at the magnetic liquid seal of aircraft,the COMSOL finite element analysis software was used to establish a magnetic liquid sealing model of different structural parameters.The structure parameters such as sealing gap,polar teeth width,polar teeth height,and polar teeth positions are calculated and analyzed respectively.Second,based on the formula for calculating pressure resistance,combine with the results of the finite element analysis,calculate the strength difference between the magnetic field of the seal under different parameters,and then judge the resistance capacity of different magnetic liquid sealing structures.Studies are obtained that the sealing gap and polar teeth width have a greater impact on the sealing resistance capacity of magnetic liquids,polar teeth height and polar teeth positions have less impact on the magnetic liquid sealing capacity.The sealing effect is best when the polar teeth shape is trapezoidal.Finally,through comparative analysis,select the optimal magnetic liquid sealing structure parameters,which provides theoretical basis for the study of magnetic liquid sealing resistance.

关 键 词：磁性液体密封 磁性液体 耐压能力 结构参数 

分 类 号：TH136[机械工程—机械制造及自动化]