Effects of journal rotation and surface waviness on the dynamic performance of aerostatic journal bearings

被引：55
|
作者：
Wang, Xinkuan [1 ,2 ]
Xu, Qiao [1 ]
Huang, Ming [1 ]
Zhang, Lianxin [1 ]
Peng, Zhike [2 ]
机构：
[1] China Acad Engn Phys, Inst Machinery Mfg Technol, Mianyang 621900, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2017年 / 112卷
关键词：
Surface waviness; Aerostatic bearings; Dynamic performance; STIFFNESS; STABILITY;
D O I：
10.1016/j.triboint.2017.03.027
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The investigation of journal rotation and bearing surface waviness on the dynamic performance of aerostatic journal bearings is presented in this paper. The linear perturbation theory and an iterative procedure are proposed to solve the unsteady Reynolds equation. The bearing dynamic stiffness and dynamic damping under various operating parameters are numerical calculated. The results show that journal rotation can play an important role in bearing dynamic performance. The vertical principal stiffness and principal damping of the pure aerostatic journal bearing have a significant dependence on perturbation rotational speed. The influence of surface waviness on bearing dynamic characteristics is notable. With the growth of the wave's amplitude, the absolute values of dynamic stiffness and dynamic damping can be increased clearly.
引用
收藏
页码：1 / 9
页数：9
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