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research-article

Numerical study on static and dynamic performances of a double-pad annular inherently compensated aerostatic thrust bearing

[+] Author and Article Information
Hui Zhuang

xiaolingwei 200, Nanjing, Jiangsu province, China Nanjing, 210094 China zhuangh92@163.com

Jianguo Ding

xiaolingwei 200, Jiangsu province Nanjing, 210094 China nustdjg@163.com

Peng Chen

Nanjing University of Science & Technology, Nanjing,210094, People's Republic of China Nanjing, 210094 China 693811579@qq.com

Yu Chang

xiaolingwei 200, Nanjing, Jiangsu province, China Nanjing, 210094 China 2691200356@qq.com

Xiaoyun Zeng

No 64 Mianshan Road,Mianyang,Sichuan province Mianyang, 621900 China 96-zxy@caep.cn

Hong Yang

No.64 Mianshan Road, Mianyang,Sichuan Province. Mianyang, 621900 China oyanghongscu@163.com

Xingbao Liu

No. 64 Mianshan Road,Mianyang,Sichuan Province Mianyang, 621900 China liuxingbao@caep.cn

Wei Wei

No.64 Mianshan Road,Mianyang,Sichuan Province Mianyang, 621900 China 418159170@qq.com

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received August 30, 2018; final manuscript received January 5, 2019; published online xx xx, xxxx. Assoc. Editor: Stephen Boedo.

ASME doi:10.1115/1.4042657 History: Received August 30, 2018; Accepted January 06, 2019

Abstract

The effects of the race surface waviness on the cage dynamics, including cage slip ratios, cage instabilities and time-averaged cage wear rates, in high-speed ball bearings are investigated. A dynamic model of high-speed ball bearings considering the cage effect and the race surface waviness is proposed. Based on the proposed dynamic model, the effects of the maximum wave amplitude (MWA) and the wave order (WO) of race surface waviness on cage slip ratio, cage instability and time-averaged cage wear rate are investigated. The results show that the race surface waviness has a great effect on the cage dynamics. The waviness would increase the random impacts between balls and cage pockets, and thus cause more instable motion of the cage. Although the ball skidding and the cage slip ratio decrease with the increase of MWA, the cage instability and the cage wear rate become severe when MWA increases. In addition, the effect of WO on cage dynamics is nonlinear. The current investigation could provide a theoretical tool for an in-depth understanding of the dynamics in a high-speed ball bearing.

Copyright © 2019 by ASME
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