Automotive wheel bearing supports vehicle weight and is divided into the first generation through sixth generation bearing depending on the forms, developed into the components that play an important role to convey engine''s driving force to wheel.
While rotating metal peen at high speed, orbital forming process, one of the methods to fasten hub and inner ring in three generation bearing, is a kind of incremental forming method that fastens the hub and the inner ring by processing repeatedly the hub part of bearing.
As orbital forming process can improve the life of regular bearing with the forming method to replace the existing use of nut fastened method and maintain a certain amount of pre-load, the trend is that three generation bearing using orbital forming process is often used recently in the auto market.
Though the application to the finite element analysis of orbital forming process is classified in a method of three dimensional analysis and axisymmetric analysis, in the case of three dimensional analysis, it shows very similar results with test results but, as the contact problem of large deformation, has a disadvantage which requires the excessive time for analysis; whereas it has a problem that the time for analysis is very fast but the rotatory power of forming peen to revolve fails to be considered and the change amount of large external diameter about inner ring displays a great deal of difference after the load of forming peen and orbital forming process.
For those reason, this study has made a comparison with the result of actual experiment by suggest the analysis which fails to consider the rotation of the existing peen and new method of axisymmetric analysis in order to apply the finite element analysis, and proposed a way that lessen the time of three dimensional analysis by modifying element type to be used in ABAQUS/Standard program.