上海大学 机电工程与自动化学院， 上海 200072
出版日期:2018-05-28发布日期:2018-05-28基金资助:国家自然科学基金项目（51705302）Vibration Reduction Characteristics of Metal Damper inJournal Bearing-Rotor System
LI Zhaolun,WANG Xiaojing,SHEN Yifan,CHEN Chao,DONG JianSchool of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China
Online:2018-05-28Published:2018-05-28摘要/Abstract
摘要： 为了探究金属阻尼器对滑动轴承-转子系统减振性能的影响，设计并制造了普通、周向金属阻尼器支撑、径向金属阻尼器支撑的3种滑动轴承，并通过试验研究了含3种轴承的轴承-转子系统的振动特性和稳定性，分析了轴承-转子系统的半速涡动和减振特性.结果表明：与普通滑动轴承相比，金属阻尼器支撑的滑动轴承的加速度幅值显著降低；因为没有明显的半速涡动和异步振动，所以径向金属阻尼器支撑的滑动轴承比周向金属阻尼器支撑的滑动轴承的减振效果更好；由金属阻尼器消散的振动能量有助于提高轴承-转子系统的动态稳定性.
关键词: 滑动轴承, 转子, 金属阻尼器, 减振, 半速涡动
Abstract: In order to investigate the influence of metal damper (MD) on the damping performance of journal bearing-rotor system, three kinds of journal bearings (general journal bearings, journal bearings supported on circular MD, journal bearings supported on radial MD) were designed and manufactured. Experiments were carried out to investigate vibration characteristics and stability of the bearing-rotor system with the above bearings. Half speed vortex and vibration reduction characteristics of the system were analyzed. Results show that there is a significant decrease in acceleration amplitude of the bearings embedded with MD compared to general journal bearings. The journal bearings supported on radial MD have better vibration damping effect than journal bearings supported on circular MD, for there is no obvious half speed vortex and asynchronous vibration. Vibration energy dissipated by MD contributes to improving dynamics stability of the bearing-rotor system.
Key words: journal bearings, rotor, metal damper (MD), vibration damping, half speed vortex
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