| 油膜支撑双盘转子-轴承系统周期运动稳定性与分岔 |
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| 引用本文： | 李朝峰,戴继双,闻邦椿. 油膜支撑双盘转子-轴承系统周期运动稳定性与分岔[J]. 力学学报, 2011, 43(1): 208-216. DOI: 10.6052/0459-1879-2011-1-lxxb2009-494 |
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| 作者姓名： | 李朝峰 戴继双 闻邦椿 |
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| 作者单位： | 1.东北大学机械工程与自动化学院 |
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| 基金项目： | 国家自然科学基金资助项目(50535010)~~ |
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| 摘 要： | 建立了考虑油膜支撑的双盘转子-轴承系统多自由度模型, 将与Newmark结合的延拓打靶法应用到多自由度系统的周期稳定性分析中. 主要研究双盘转子-轴承系统在转盘偏心量、偏心初始相位、轴承间隙、润滑油动力黏度以及轴承长径比5个参数域内的变化规律,得到一些有益结论: 该系统的周期运动主要以倍周期或拟周期分岔而失稳; 采用较小的转盘偏心量或增大转盘的初始偏心相位差可以提高失稳转速; 为抑制系统过早失稳, 应适当提高轴承长径比和尽可能采用较小的轴承间隙; 在选用润滑油时, 并非其动力黏度越大越好, 动力黏度较小的润滑油反而可以适当提高系统失稳转速. 研究方法和结果为相关及更为复杂的转子-轴承系统的稳定性设计及振动控制提供了理论参考.
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| 关 键 词： | 失稳转速 |
| 收稿时间： | 2009-08-10 |
| 修稿时间： | 2009-10-04 |
STABILITY AND BIFURCATION OF THE ROTOR-BEARING SYSTEM WITH DOUBLE DISKS SUPPORTED BY CYLINDRICAL BEARINGS |
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| Li Chaofeng , Dai Jishuang , Wen Bangchun. STABILITY AND BIFURCATION OF THE ROTOR-BEARING SYSTEM WITH DOUBLE DISKS SUPPORTED BY CYLINDRICAL BEARINGS[J]. chinese journal of theoretical and applied mechanics, 2011, 43(1): 208-216. DOI: 10.6052/0459-1879-2011-1-lxxb2009-494 |
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| Authors: | Li Chaofeng Dai Jishuang Wen Bangchun |
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| Affiliation: | Li Chaofeng~(*,2)) Dai Jishuang~(*, ) Wen Bangchun~* *(School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110004,China) (Shenyang Blower Works Group Co.,Ltd,China) |
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| Abstract: | Continuous model of rotor-bearing system with double disks supported by cylindrical bearings is analyzed in this paper.Shooting method is used in the stability analysis of the continuous system.The rotor-bearing system with double disks is analyzed by considering the disk eccentric magnitude,eccentric initial phase,bearing clearance,dynamic viscosity of the oil and bearing aspect ratio.Some useful conclusions are found:instability is mainly caused by the period-doubling or quasi-period bifurcation;instabili... |
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| Keywords: | double disks continuous system bifurcation stability dimension reduction instability speed |
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