| 动力吸振器对转子系统气流激振稳定性影响分析 |
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| 引用本文： | 许琦,姚红良,刘子良,闻邦椿.动力吸振器对转子系统气流激振稳定性影响分析[J].动力学与控制学报,2018,16(6):539-544. |
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| 作者姓名： | 许琦 姚红良 刘子良 闻邦椿 |
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| 作者单位： | 沈阳工业大学 机械工程学院, 沈阳 110870,东北大学 机械工程与自动化学院, 沈阳 110819,东北大学 机械工程与自动化学院, 沈阳 110819,东北大学 机械工程与自动化学院, 沈阳 110819 |
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| 基金项目： | 国家自然科学基金资助项目(51475085)和2017年辽宁省高等学校基本科研项目(LQGD2017019) |
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| 摘 要： | 针对气流激振引起离心压缩机转子振动失稳的问题,提出了采用动力吸振方法提高转子系统的稳定性.首先建立流体激励作用下转子 吸振系统动力学模型；其次采用Lyapunov理论研究附加吸振器后流体激励作用下转子系统的稳定性；分析了吸振器参数变化对转子系统稳定性的影响；最后采用数值方法进行验证.结果表明,动力吸振方法能够有效地提高转子系统失稳转速,吸振器固有频率和阻尼比对转子稳定性有较大的影响.
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| 关 键 词： | 转子动力学 稳定性 动力吸振器 气流激振 |
| 收稿时间： | 2018/6/7 0:00:00 |
| 修稿时间： | 2018/7/19 0:00:00 |
Effects of a dynamic vibration absorber on the fluid induced vibration stability of a rotor system |
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| Xu Qi,Yao Hongliang,Liu Ziliang and Wen Bangchun.Effects of a dynamic vibration absorber on the fluid induced vibration stability of a rotor system[J].Journal of Dynamics and Control,2018,16(6):539-544. |
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| Authors: | Xu Qi Yao Hongliang Liu Ziliang and Wen Bangchun |
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| Abstract: | A dynamic vibration absorber was proposed to improve the fluid induced vibration stability of a centrifugal compressor rotor system. First, the dynamic model of the rotor system under fluid excitation was established. Second, the Lyapunov theory was applied to study the fluid induced vibration stability of the rotor system with attached the dynamic vibration absorber. Then the influences of the absorber parameters on the stability of the rotor system were analyzed, which were verified by numerical simulations. The results show that the dynamic vibration absorber can effectively increase the instability speed of the rotor system, and the natural frequency and damping ratio of the absorber have influences on the stability of the rotor. |
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| Keywords: | rotor dynamics stability dynamic vibration absorber fluid induced vibration |
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