Effects of Ovality Errors on Dynamics Stability of Elliptic Hydrodynamic Journal Bearings

China Mechanical Engineering ›› 2011, Vol. 22 ›› Issue (20): 2466-2469.

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Effects of Ovality Errors on Dynamics Stability of Elliptic Hydrodynamic Journal Bearings

Zhang Hongxian;Xu Wubin;Wang Zhenjiang;Chen Qibing;Li Bing

Guangxi University of Technology,Liuzhou,Guangxi,545006

Online:2011-10-25 Published:2011-11-02
Supported by:

National Natural Science Foundation of China（No. 50865001）;
Guangxi Provincial Natural Science Foundation of China（No. 0991066）

椭圆度对椭圆滑动轴承稳定性的影响

张宏献;徐武彬;王镇江;陈其兵;李冰

广西工学院，柳州，545006

基金资助:
国家自然科学基金资助项目(50865001)；广西自然科学基金资助项目(桂科自0991066)；广西高校优秀人才计划资助项目(桂教人才0826)
National Natural Science Foundation of China（No. 50865001）;
Guangxi Provincial Natural Science Foundation of China（No. 0991066）

Abstract

Abstract:

An oil-film force model of a hydrodynamic journal bearing allowing for ovality errors was established.And the model was analyzed based on Sommerfeld number. The stability map of hydrodynamic journal bearings with roundness errors can be ploted using a dimensionless parameter op.The research shows that the ovality errors of hydrodynamic journal bearings have significant effects on the stability of hydrodynamic journal bearing systems.

Key words: elliptic hydrodynamic journal bearing, critical speed, oil-film force, dynamics stability

摘要：

建立了椭圆滑动轴承的油膜力力学模型，并采用基于Sommerfeld数的滑动轴承转子系统稳定性分析方法分析了该模型。利用量纲一运行参数op得到不同椭圆度误差的滑动轴承的稳定性临界曲线。结果表明：滑动轴承轴颈的椭圆度误差对滑动轴承转子系统有显著影响。

关键词:

椭圆滑动轴承, 临界转速, 油膜力, 动力学稳定性



CLC Number:

TH117

ZHANG Hong-Xian, XU Wu-Ban, WANG Tian-Jiang, CHEN Ji-Bing, LI Bing.

Effects of Ovality Errors on Dynamics Stability of Elliptic Hydrodynamic Journal Bearings

[J]. China Mechanical Engineering, 2011, 22(20): 2466-2469.

张宏献, 徐武彬, 王镇江, 陈其兵, 李冰.

椭圆度对椭圆滑动轴承稳定性的影响

[J]. 中国机械工程, 2011, 22(20): 2466-2469.

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Effects of Ovality Errors on Dynamics Stability of Elliptic Hydrodynamic Journal Bearings

椭圆度对椭圆滑动轴承稳定性的影响

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