Statics And Dynamics Analysis Of Angle-contact Ball Bearing

Bearing is a very important part in mechanical transmission system. The development of mechanical industry has raised the requirement of the bearing in service life,rotating velocity and structural design. This paper has done a research on statics and dynamics performance of angle-contact ball rolling-bearings, laying a theoretical foundation for the design,manufacturing and application of the bearing.Researching the static performance of angle-contact ball bearings in this paper, the load and deformation characteristics of the rolling bearing under axial and radial loads are studied by using the quasi-dynamic method on the basis of Hertzian contact theory. Also the stiffness in both axial and radial direction, stress and the contact distortion are formulated and calculated.Angle-contact bearings are usually applied for supporting. Because the supporting stiffness of rolling bearing is non-linear, especially under the circumstances of high speed, the internal working status is so complicated that it is not regarded as normal linear support and ordinary non-linear support. The effect of centrifugal force on the rolling bearing increases. Researching the dynamic performance of angle-contact ball bearings in this paper, the force equilibrium formulas of the rolling body and the bearing are established, including the inertial force of the rolling body. The contact angle and deformation of the rolling bearing under rotating are analyzed. One dynamics analytical model of the rolling bearing/rotor system is developed. And the effect of stiffness and rotating velocity on the system stability are discussed.