| 转静件碰摩模型及不对中转子局部碰摩的混沌特性 |
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| 引用本文： | 刘献栋,李其汉.转静件碰摩模型及不对中转子局部碰摩的混沌特性[J].航空动力学报,1998,13(4):361-365,456. |
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| 作者姓名： | 刘献栋 李其汉 |
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| 作者单位： | 北京航空航天大学 |
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| 摘 要： | 本文从经典碰撞理论出发，建立了一种应用广泛的碰摩模型，分析了两种特殊情况，并给出了适合航空发动机转子系统的碰摩模型。建立了考虑静子本身刚度的不对中质量偏心转子碰摩的动力学方程，并进行数值计算、分析。分析表明，系统除了具有各种形式的周期运动、拟周期运动外，还具有丰富的混沌运动与分叉现象。
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| 关 键 词： | 转子 摩擦 模型 混沌 分叉现象 |
| 收稿时间： | 2/1/1998 12:00:00 AM |
| 修稿时间： | 5/1/1998 12:00:00 AM |
IMPACT-RUB MODEL AND CHAOTIC FEATURE OF PARTIAL RUB OF ECCENTRIC ROTOR |
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| Liu Xiong and Li Qihan.IMPACT-RUB MODEL AND CHAOTIC FEATURE OF PARTIAL RUB OF ECCENTRIC ROTOR[J].Journal of Aerospace Power,1998,13(4):361-365,456. |
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| Authors: | Liu Xiong and Li Qihan |
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| Institution: | 4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083;4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083 |
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| Abstract: | A general impact-rub model is established according to the classical impact theory.Then the suitable impact-rub model for aeroengine is found out.Two special examples of this general model are analyzed.The impact-rub dynamic equations of an eccentric and unbalanced rotor system are derived,which take the stiffness of stator into account.The equations are calculated numerically and the results are analyzed.The results reveal that the system possesses varied chaotic motions and bifurcation phenomena,besides periodic and quasi-periodic vibrations.The chaotic motions and related phenomena discovered in the impact-rub fault of the eccentric rotor system can be taken as its remarkable features and serve as symptoms to diagnose the impact-rub fault. |
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| Keywords: | Rotors Rub Models Chaos Bifurcation |
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