Analysis on dynamic characteristics of aero-engine high-speed ball bearings

作者：Wang Liqin^*; Cui Li; Zheng Dezhi; Gu Le

来源：Acta Aeronautica et Astronautica Sinica, 2007, 28(6): 1461-1467.

• Combined load
• Dynamic characteristics

The dynamic characteristics of ball bearings at high speed have important effects on the rotor system of aero-engine. In order to simulate the actual working conditions, the dynamic analysis model of ball bearings under arbitrary loads is established by quasi-dynamic method, by which forces and moments are obtained from inter-action model of bearing parts, and the traction force is computed by an accurate traction model. The efficient solution method of nonlinear equations is proposed. A program named rolling element bearing advanced dynamics tool (READ) is developed. Taking type 276927NK1 W1(H) bearing as an example, the effect rules of different operating condition parameters and bearing structure parameters for the dynamic characteristics of ball bearings are analyzed by the program. Finally, the accuracy of the program is verified by the computation example of Gupta. The study of dynamic characteristics of ball bearings establishes the foundation for the further study of dynamic characteristic analysis of rotor-bearing integration system.

• 出版日期2007