汽车轮毂轴承唇形密封圈密封性能优化研究
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摘要
为优化汽车轮毂轴承唇形密封圈的结构,在ANSYS有限元分析软件中建立其有限元模型,研究轴向过盈量、弹簧以及侧唇倒角对唇形密封圈密封性能的影响。研究结果表明:轴向过盈量对唇形密封圈的密封性能影响较大,当轴向过盈量小于0.5 mm时,随着轴向过盈量的增大,唇形密封圈的密封性能变好,当轴向过盈量大于0.5 mm时,随着轴向过盈量的增大,唇形密封圈的密封性能变差;与带弹簧的密封圈相比,不带弹簧的密封圈的最大等效应力、应变和接触压力的出现位置发生改变,且其最大值皆小于带弹簧密封圈的,因此带弹簧唇形密封圈的密封性能更好;与上侧唇倒角相比,下侧唇倒角对密封圈等效应力分布的影响更大,对密封性能的影响更加明显。
The finite element model of automotive wheel hub bearing lip seal was established by using ANSYS,in order to optimize the structure of the lip seal. The influence of axial interference,spring and the chamfer of lip's side on sealing performance were researched. The results show that the axial interference has great influence on the sealing performance of lip seal. When the axial interference is less than 0. 5 mm,the sealing performance of lip seal is improved by increasing the axial interference. However,when the axial interference is greater than 0. 5 mm,the increasing of the axial interference results in poor sealing performance. The location of maximum Von-mises stress,Von mises strain and contact pressure of the the lip seal without spring is changed and their values are reduced compared with the lip seal with spring.Therefore,the lip seal with spring has a better sealing performance. Compared with the chamfer of upper lip's side,the chamfer of lower lip's side has greater influence on the equivalent stress distribution of the lip seal,and has a more obvious effect on the sealing performance.
The finite element model of automotive wheel hub bearing lip seal was established by using ANSYS,in order to optimize the structure of the lip seal. The influence of axial interference,spring and the chamfer of lip's side on sealing performance were researched. The results show that the axial interference has great influence on the sealing performance of lip seal. When the axial interference is less than 0. 5 mm,the sealing performance of lip seal is improved by increasing the axial interference. However,when the axial interference is greater than 0. 5 mm,the increasing of the axial interference results in poor sealing performance. The location of maximum Von-mises stress,Von mises strain and contact pressure of the the lip seal without spring is changed and their values are reduced compared with the lip seal with spring.Therefore,the lip seal with spring has a better sealing performance. Compared with the chamfer of upper lip's side,the chamfer of lower lip's side has greater influence on the equivalent stress distribution of the lip seal,and has a more obvious effect on the sealing performance.
引文
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[20]王伟,邓涛,赵树高.橡胶Mooney-Rivlin模型中材料常数的确定[J].特种橡胶制品,2004,25(4):8-10.WANG W,DENG T,ZHAO S G.Determination for material constants of rubber Mooney-Rivlin model[J].Special Purpose Rubber Products,2004,25(4):8-10.
[2]LEE C Y,LIN C S,JIAN R Q,et al.Simulation and experimentation on the contact width and pressure distribution of lip seals[J].Tribology International,2006,39(9):915-920.
[3]SHEN D,SALANT R F.An unsteady mixed soft EHL model,with application to a rotary lip seal[J].Tribology International,2007,40(4):646-651.
[4]MOON H L,LM J S,KIM H Y.Shape optimization of an automotive wheel bearing seal using the response surface method[J].Transactions of the Korean Society of Automotive Engineers,2010,18(6):84-90.
[5]CONTE M,PINEDO B,PEREZ I,et al.New high performance test rig for sealing systems characterization[C]//Proceedings of World Tribology Congress.Torino:The Italian Tribology Association,2013.
[6]BAART P,LUGT P M,PRAKASH B.On the normal stress effect in grease-lubricated bearing seals[J].Tribology Transactions,2014,57(5):939-943.
[7]JIA X H,GUO F,HUANG L,et al.Effects of the radial force on the static contact properties and sealing performance of a radial lip seal[J].Science China Technological Sciences,2014,57(6):1175-1182.
[8]HAEPP A.Labyrinth seal of a radial rolling contact bearing having a radial flange:8979385[P].2015-3-17.
[9]YING G Y,LIU S L,ZHENG S Y.Stability and bifurcation analysis of rotor-bearing-seal system[C]//Proceedings of IOP Conference Series:Materials Science and Engineering.London:IOPPublishing,2016.
[10]郑明军.橡胶件的静、动态特性及有限元分析[D].北京:北方交通大学,2002.
[11]陈敏,姜小敏,赵祖欣,等.唇形橡胶密封圈非线性接触有限元分析[J].润滑与密封,2009,34(11):76-79.CHEN M,JIANG X M,ZHAO Z X,et al.The non-1inear contact finite element analysis of the mouth shaped rubber sealing ring[J].Lubrication Engineering,2009,34(11):76-79.
[12]周旭,汪峰,邱宝象.第三代轮毂轴承单元密封件的设计与性能验证[C]//第六届中国轴承论坛论文集.临清:中国轴承工业协会,2011:62-64.
[13]吴庄俊,赵良举,杜长春,等.结构参数对径向唇形密封圈密封性能的影响研究[J].合肥工业大学学报(自然科学版),2012,35(11):1451-1455.WU Z J,ZHAO L J,DU C C,et al.Study of the influence of structure parameters on sealing performance of radial lip seal[J].Journal of Hefei University of Technology(Natural Science),2012,35(11):1451-1455.
[14]王道玉,曾亿山,牛家忠.车桥旋转轴唇形密封圈仿真研究[J].流体传动与控制,2014(5):35-37.
[15]陈桥,周建军,李凤远,等.高水压环境下盾构主轴承唇形密封圈密封性能分析[J].液压与气动,2015(3):27-31.CHEN Q,ZHOU J J,LI F Y,et al.Sealing performance analysis of lip seals in main bearing of shield machine under hish pressure environment[J].Chinese Hydraulics&Pneumatics,2015(3):27-31.
[16]李珍莲,张新瑞,许雪飞,等.发动机用高速高温PTFE唇形密封圈失效分析[J].润滑与密封,2016,41(4):119-121.LI Z L,ZHANG X R,XU X F,et al.Investigation on the failure of slip sealing ring of typical engine at high speed and high temperature[J].Lubrication Engineering,2016,41(4):119-121.
[17]张树强,陶正,陈杰,等.旋转式唇形密封圈开启特性研究[J].火箭推进,2016,42(5):52-57.ZHANG S Q,TAO Z,CHEN J,et al.Research on opening characteristics of rotary lip seals[J].Journal of Rocket Propulsion,2016,42(5):52-57.
[18]甘屹,刘胜,张劲枫.旋转轴唇形密封圈的建模与仿真研究[J].润滑与密封,2017,42(6):73-78.GAN Y,LIU S,ZHANG J F.Modeling and simulation of lip seals for revolving axis[J].Lubrication Engineering,2017,42(6):73-78.
[19]李建国.油封结构优化设计[D].北京:北京化工大学,2007.
[20]王伟,邓涛,赵树高.橡胶Mooney-Rivlin模型中材料常数的确定[J].特种橡胶制品,2004,25(4):8-10.WANG W,DENG T,ZHAO S G.Determination for material constants of rubber Mooney-Rivlin model[J].Special Purpose Rubber Products,2004,25(4):8-10.