| 转子碰摩运动的非稳态分析 |
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| 引用本文： | 丁千,陈予恕.转子碰摩运动的非稳态分析[J].航空动力学报,2000,15(2):191-195. |
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| 作者姓名： | 丁千 陈予恕 |
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| 作者单位： | 天津大学力学系,天津300072 |
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| 基金项目： | 国家自然科学基金重大资助项目! ( 19990 5 10 ) |
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| 摘 要： | 本文研究了一个柔性单圆盘挤压油膜阻尼器转子系统的非稳态碰摩运动。转子以定常角加速度通过临界转速时产生碰摩, 碰摩力由库仑摩擦定理确定。通过数值计算揭示在各种系统参数下, 角加速度对反向涡动的影响规律, 为防止转子通过临界转速时产生碰摩失稳提供一定参考。
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| 关 键 词： | 转子 阻尼器 摩擦 失稳 |
| 收稿时间： | 1999/5/10 0:00:00 |
| 修稿时间： | 7/5/1999 12:00:00 AM |
Non-Stationary Analysis of Rotor/Casing Rubbing |
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| Ding Qian and Chen Yushu.Non-Stationary Analysis of Rotor/Casing Rubbing[J].Journal of Aerospace Power,2000,15(2):191-195. |
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| Authors: | Ding Qian and Chen Yushu |
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| Institution: | Department of mechanics,Tianjing University,Tianjing 300072,China |
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| Abstract: | A flexible Jeffcott rotor supported at the ends by identical squeeze film dampers is investigated to study the non stationary vibration due to rubbing with casings during passing through the critical speed.The rotational speed of the rotor is supposed increasing at a constant angular acceleration.The contact force theory is used to calculate the impacting forces and friction forces.The numerical ealculation reveals the effects of the rotational acceleration on the occurrence of diverging backward whirl,so as to determine whether the rotor can pass through the critical speed or not.The influence of some system parameters on the critical acceleration is also discussed. |
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| Keywords: | rotor dampers rub instability |
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