东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (8): 1131-1138.DOI: 10.12068/j.issn.1005-3026.2019.08.013

• 机械工程 • 上一篇    下一篇

滚动轴承非线性因素对转子系统振动特性的影响

罗忠1,2, 周逸夫1,2, 边子方1,2, 王菲1,2   

  1. (1. 东北大学 机械工程与自动化学院, 辽宁 沈阳110819; 2. 东北大学 航空动力装备振动及控制教育部重点实验室, 辽宁 沈阳110819)
  • 收稿日期:2018-07-10 修回日期:2018-07-10 出版日期:2019-08-15 发布日期:2019-09-04
  • 通讯作者: 罗忠
  • 作者简介:罗忠(1978-),男,内蒙古集宁人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(11572082);中央高校基本科研业务费专项资金资助项目(N170308028,N160312001);辽宁省高等学校优秀人才支持计划项目(LJQ2015038).

Influence of Nonlinearity Factors of Rolling Bearings on Vibration Characteristics of Rotor System

LUO Zhong1,2, ZHOU Yi-fu1,2, BIAN Zi-fang1,2, WANG Fei1,2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion System, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2018-07-10 Revised:2018-07-10 Online:2019-08-15 Published:2019-09-04
  • Contact: LUO Zhong
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摘要: 针对滚动轴承支承下的转子系统在运行过程中存在的滞后突跳问题,利用嵌入同伦弧长延拓的HB-AFT方法,可以快速计算在滚动轴承支承下转子系统的滞后突跳区间;利用Floquent理论进行稳定性判定,分析轴承等效刚度、轴承游隙与线性阻尼系数对转子系统滞后突跳的影响.结果表明:轴承游隙与轴承等效刚度在一定范围内变化会影响转子系统的滞后突跳区间,而阻尼系数只在转子系统临界转速附近影响系统振动的幅值.研究结果可为轴承-转子系统参数的选取提供理论参考.

关键词: 滚动轴承, 非线性, 转子系统, 振动特性, 滞后突跳

Abstract: Aiming at the hysteresis jump of a rotor system supported by rolling bearings during operation, by using the HB-AFT method embedded in the homotopy arc extension, the interval of the hysteresis jump of the rotor system supported by rolling bearings can be quickly calculated. The Floquent theory is used to determine the stability, and the effects of bearing equivalent stiffness, bearing clearance and linear damping coefficient on the hysteresis jump of the rotor system are analyzed. The results show that the variation of bearing clearance and bearing equivalent stiffness within a certain range will affect the hysteresis jump range of the rotor system, and the damping coefficient only affects the system’s vibration amplitude near the critical speed of the rotor system. The results of the study provide a theoretical reference for setting the bearing-rotor system parameters.

Key words: rolling bearing, nonlinearity, rotor system, vibration characteristics, hysteresis jump

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