- Leontiev M.K., Snetkova E.I., Nonlinear models of rolling bearings in rotordynamics
[pdf]ENG (333 Kb)
|The mathematical model of the nonlinear ball bearing with five freedom degrees and the results of its application are considered. The model is used in dynamic analysis of the complex rotor systems. It is built on the basis of Hertz theory. The ball bearing model with 5 freedom degrees takes into account clearance in the bearing, the number of rolling elements in loading area, contact stiffness, axial load acting on the bearing and contact angle. Results of static and dynamic analysis of the point rotor with the nonlinear bearing are given. It is proved that axial load acting on the bearing and the unbalanced rotor force influences the bearing stiffness a lot.