Modelling and Nonlinear Analysis of Journal Center Trajectory of Sleeve Bearing with Different Axial Oil Grooves

Based on the motion equation of journal center trajectory, the nonlinear journal center trajectory under dynamic load is calculated, and the journal center trajectory of cylindrical bearing, two-axial groove journal bearing and three-axial groove journal bearing is compared. When dynamic load is applied in bearing, the journal center oscillates and adjusts again, and finally stabilizes at a new balanced position. The more the number of oil grooves is, the faster the sleeve bearing journal center velocity tends to be stable. The three-axial groove journal bearing has the fastest stabilizing speed, the advantage of good impact resistance and stability; the cylindrical bearing have the slowest stabilizing speed, the worst impact resistance and stability.