Abstract: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 li〖BF〗p’s〖BFQ〗 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 05 mm,the sealing performance of lip seal is improved by increasing the axial interference.However,when the axial interference is greater than 05 mm,the increasing of the axial interference results in poor sealing performance.The location of maximum Vonmises 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 li〖BF〗p’s〖BFQ〗 side,the chamfer of lower li〖BF〗p’s〖BFQ〗 side has greater influence on the equivalent stress distribution of the lip seal,and has a more obvious effect on the sealing performance.
