The effect of texture on the shaft surface on the sealing performance of radial lip seals  

作　　者：GUO Fei JIA XiaoHong GAO Zhi WANG YuMing 

机构地区：[1]State Key Laboratory of Tribology, Tsinghua University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第7期1343-1351,共9页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51175283);the National Science and Technology Major Project of China(Grant No.2013ZX04010021);the Specialized Research Fund for the Doctoral Program(Grant No.20130002110006)

摘　　要：On the basis of elastohydrodynamic model,the present study numerically analyzes the effect of various microdimple texture shapes,namely,circular,square,oriented isosceles triangular,on the pumping rate and the friction torque of radial lip seals,and determines the microdimple texture shape that can produce positive pumping rate.The area ratio,depth and shape dimension of a single texture are the most important geometric parameters which influence the tribological performance.According to the selected texture shape,parameter analysis is conducted to determine the optimal combination for the above three parameters.Simultaneously,the simulated performances of radial lip seal with texture on the shaft surface are compared with those of the conventional lip seal without any texture on the shaft surface.On the basis of elastohydrodynamic model,the present study numerically analyzes the effect of various microdimple texture shapes,namely,circular,square,oriented isosceles triangular,on the pumping rate and the friction torque of radial lip seals,and determines the microdimple texture shape that can produce positive pumping rate.The area ratio,depth and shape dimension of a single texture are the most important geometric parameters which influence the tribological performance.According to the selected texture shape,parameter analysis is conducted to determine the optimal combination for the above three parameters.Simultaneously,the simulated performances of radial lip seal with texture on the shaft surface are compared with those of the conventional lip seal without any texture on the shaft surface.

关 键 词：rotary lip seal ELASTOHYDRODYNAMICS surface texture pumping rate friction torque 

分 类 号：O35[理学—流体力学]