参数可调椭圆滑动轴承转子系统动力学研究及抑振机理

doi:10.7523/j.issn.2095-6134.2019.01.004

中国科学院大学学报 ›› 2019, Vol. 36 ›› Issue (1): 15-24.DOI: 10.7523/j.issn.2095-6134.2019.01.004

参数可调椭圆滑动轴承转子系统动力学研究及抑振机理

张磊¹, 裴世源¹, 徐华^1,2

1. 西安交通大学现代设计及转子轴承系统教育部重点实验室, 西安 710049;
2. 新疆大学机械工程学院, 乌鲁木齐 830047

收稿日期:2017-08-31 修回日期:2018-01-22 发布日期:2019-01-15
通讯作者: 裴世源,E-mail:zhangxunmeng@stu.xjtu.edu.cn
基金资助:
国家自然科学基金（51605367，51575421）资助

Dynamic study and vibration suppression mechanism of rotor system with adjustable elliptical journal bearings

ZHANG Lei¹, PEI Shiyuan¹, XU Hua^1,2

1. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049, China;
2. School of Mechanical Engineering, Xinjiang University, Urumqi 830047, China

Received:2017-08-31 Revised:2018-01-22 Published:2019-01-15

摘要/Abstract

摘要： 椭圆滑动轴承在许多大型和关键设备中被广泛应用。常见的椭圆滑动轴承都是针对某种特定工况设计的，在实际运行过程中，转速和载荷等工况参数的变化会影响轴承支撑的转子系统的动力学特性。仅研究稳定工况下的动力学特性不能满足实际工况要求。为适应时变工况，维持转子轴承系统在不同工作状态下的稳定性，提出一种参数可调椭圆轴承。通过调节轴承油膜间隙，研究椭圆度对轴承油膜刚度和阻尼的影响，然后在不同椭圆度下对转子轴承系统进行动力学分析。最后搭建转子轴承试验台，通过试验验证调节椭圆轴承的油膜间隙可有效地抑制转子的振动。

关键词: 椭圆轴承, 椭圆度, 转子轴承系统, 转子动力学, 抑振机理

Abstract: Elliptical bearings are widely used in many large and critical equipments. Elliptical bearings are usually designed based on certain conditions. However, in the actual operation processes, the speed and load parameter changes affect the dynamic characteristics of rotor bearing support system. The dynamic characteristics under the steady conditions do not meet the actual working conditions. In order to adapt to the time-varying conditions and maintain the stability of the rotor bearing system under different working conditions, an elliptical bearing with adjustable parameters is proposed in this study. By adjusting the oil film gap of the bearing, the influences of ellipticity on the stiffness and damping of the bearing oil film is studied. Then the dynamic analysis for the rotor bearing systems with different ellipticity values is carried out. Finally, a test rig for rotor bearing is set up to verify that the rotor vibration can be effectively suppressed by adjusting the oil film gap of the elliptical bearing.

Key words: elliptical bearing, ellipticity, rotor-bearing system, rotor dynamics, vibration suppression mechanism

中图分类号:

TH113

张磊, 裴世源, 徐华. 参数可调椭圆滑动轴承转子系统动力学研究及抑振机理[J]. 中国科学院大学学报, 2019, 36(1): 15-24.

ZHANG Lei, PEI Shiyuan, XU Hua. Dynamic study and vibration suppression mechanism of rotor system with adjustable elliptical journal bearings[J]. , 2019, 36(1): 15-24.

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参数可调椭圆滑动轴承转子系统动力学研究及抑振机理

Dynamic study and vibration suppression mechanism of rotor system with adjustable elliptical journal bearings

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