| 碰摩转子弯扭摆耦合振动非线性动力学特性 |
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| 引用本文： | 李永强,刘杰,刘宇,张大志,王薇.碰摩转子弯扭摆耦合振动非线性动力学特性[J].机械工程学报,2007,43(2):44-49. |
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| 作者姓名： | 李永强 刘杰 刘宇 张大志 王薇 |
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| 作者单位： | 1. 东北大学理学院,沈阳,110004
2. 东北大学机械与自动化学院,沈阳,110004 |
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| 摘 要： | 为进一步提高旋转轴系的安全性,研究旋转轴系弯扭摆振动耦合振动问题.推导一般意义下,考虑陀螺力矩的单盘转子弯扭摆耦合振动非线性方程,基于该方程推出不平衡转子和碰摩转子的非线性弯扭摆耦合振动方程.应用数值方法研究碰摩转子弯扭摆耦合振动相应的复杂动力学行为,研究转子转速对碰摩转子弯扭摆耦合振动的分岔和混沌行为的影响,以及扭转振动和摆动振动对弯曲振动的影响.分析结果为转子的安全运行和弯扭摆耦合振动故障的判别提供了理论依据.
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| 关 键 词： | 碰摩 非线性 耦合 振动 弯扭摆 碰摩转子 弯扭摆耦合振动 非线性 力学特性 COUPLING RUBBING ROTOR CHARACTERISTICS DYNAMICS 理论 判别 振动故障 安全运行 结果 分析 弯曲振动 扭转振动 影响 混沌行为 分岔 转子转速 |
| 修稿时间： | 2006年2月12日 |
NONLINEAR DYNAMICS CHARACTERISTICS OF RUBBING ROTOR WITH BENDING-TORSIONAL-PENDULAR COUPLING VIBRATIONS |
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| LI Yongqiang,LIU Jie,LIU Yu,ZHANG Dazhi,WANG Wei.NONLINEAR DYNAMICS CHARACTERISTICS OF RUBBING ROTOR WITH BENDING-TORSIONAL-PENDULAR COUPLING VIBRATIONS[J].Chinese Journal of Mechanical Engineering,2007,43(2):44-49. |
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| Authors: | LI Yongqiang LIU Jie LIU Yu ZHANG Dazhi WANG Wei |
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| Abstract: | The characteristics of coupled bending-torsional-pendular coupling vibrations of rotary shaft systems are studied to improve the safety of rotary shaft systems. It is deduced that the general differential equation of bending-torsional-pendular coupling vibration about rotor with the gyroscopic moment. On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced. The bifurcation and chaos behavior especially the influence on bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of rotor rotating speed are analyzed by using the numerical value analysis method. The analysis results caw provide the theoretical bases for safely operating and identifying the combination-resonance fault of the rotors. |
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| Keywords: | Rubbing Nonlinear Coupling Vibrations Bending-torsional-pendular |
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