Study on Influence of Bending-Torsion Coupling in an Impacting-rub Rotor System
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摘要: 建立了一碰摩转子的弯扭耦合数学模型,应用非线性动力学现代理论和一未考虑弯扭耦合的数学模型的动态响应特征进行比较后发现,两类情况下系统都出现了周期、混沌和加周期等非线性动力学现象.虽然两类方程分岔图的变化过程基本相同,但扭转作用的具体影响却不容忽视.这些结果对以后分析转子碰摩现象有一定的参考价值.Abstract: A mathematical model of an impacting-rub rotor system with bending-torsion coupling was established. It was compared with the model without bending-torsion coupling through the modern nonlinear dynamic theory. It is observed that periodical, chaotic, period adding phenomena in them and the two models have a similar bifurcation process in their bifurcation figures. But the influence of bending-torsion on the dynmaic characteristics of the system is not neglected. The results have considerable meanings to analyze and improve the characteristics of an impacting-rub rotor system.
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Key words:
- impacting-rub /
- bending-torsion coupling /
- chaos /
- period adding
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[1] Yamamoto T T.On critical speeds of a shaft[J].Memoirs of the Faculty of Engineering,Nagoya University(Japan),1954,6(2):211. [2] Ehrich F F.Some observations of chaotic vibration phenomena in high-speed rotor dynamics[J].ASME Journal of Vibration,Acoustics,Stress,and Reliability in Design,1991,113(1):50-57. [3] Goldman P,Mnszynska A.Dynamic effects in mechanical structures with gaps and impacting[J].Order and Chaos,1994,116(4):541-547. [4] 任福春,杨昆.不平衡转子振动的动力耦合分析[J].汽轮机技术,1997,13(1):33-37. [5] 夏伯乾,虞烈,谢友柏.齿轮-转子-轴承系统弯扭耦合振动模型研究[J].西安交通大学学报,1997,31(2):93. [6] 李舜酩,李香莲.碰摩转子弯扭耦合振动特性分析[J].机械科学与技术,2000,19(1):1. [7] 刘献栋,李其汉.转静件碰摩模型及不动中转子局部碰摩的混沌特性[J].航空动力学学报,1998,13(4):361. [8] 孙政策,徐健学,龚璞林.转子系统碰摩行为的研究[J].振动工程学报,2000,13(3):474.
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