The Radial Stiffness and Application of Double-Decker Ball Bearing

Abstract:

Article Preview

Single Decker Ball Bearing (SDBB) is widely used in Rotor-Bearing system. A new method using DDBB composed of two ball bearings as support bearings is proposed. The mechanical model of the DDBB based on the quasi-dynamic method is established and the corresponding calculating program compiled in Matlab is developed after considering the radial load, axial load, centrifugal force as well as gyroscopic moment acted on the bearing simultaneously. And then a simple Rotor-DDBB model is adopted to analyze the rotor unbalance response with different parameters. The simulation results show that shaft rotating speed, ball materials, axial preload and the initial contact angles to some extent impact the bearing stiffness while have little affects on system nature frequency and the rotor unbalance response which greatly affected by the system base stiffness. The results provide a theoretical basis for the design of DDBB and application in a Rotor-Bearing system.

Info:

Periodical:

Edited by:

Daizhong Su, Qingbin Zhang and Shifan Zhu

Pages:

353-356

DOI:

10.4028/www.scientific.net/KEM.450.353

Citation:

Y. L. Zhu and L. X. Xu, "The Radial Stiffness and Application of Double-Decker Ball Bearing", Key Engineering Materials, Vol. 450, pp. 353-356, 2011

Online since:

November 2010

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.