Practical researches showed that lubrication oil slick produced a great effect on bearing gluing

scuffing and contact fatigue.But

all the previous bearing simulations neglected its existence

causing obvious errors.In this paper

a new simulation method was proposed by assuming that bearing rings are rigid firstly.Based on Hertz contact theory

mechanical ball bearing model under radical and axial feed was set up with quasi-dynamics.Using Newton-Raphson method as a key calculation tool when solving the model

contact load and deformation were obtained

contact stiffness between each ball and inner ring

or each ball and outer ring were calculated.Considering the effect of lubrication oil slick on bearing dynamic characteristic on the basis of elastohydrodynamic lubrication(EHL) theory

oil slick rigidity was obtained.A new concept of equivalent synthetic rigidity was presented and solved.In view of above mathematical computation

exact dynamic simulation on ball bearing was carried out using ADAMS software.