| 非线性油膜力作用下转子弯扭耦合振动特性研究 |
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| 引用本文： | 林海英,崔颖. 非线性油膜力作用下转子弯扭耦合振动特性研究[J]. 北京航空航天大学学报, 2010, 36(5): 588-591 |
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| 作者姓名： | 林海英 崔颖 |
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| 作者单位： | 北京航空航天大学,无人驾驶飞行器设计研究所,北京,1001912;哈尔滨工业大学,能源科学与工程学院,哈尔滨,150001 |
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| 基金项目： | 航空科学基金资助项目 |
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| 摘 要： | 建立了非线性油膜力作用下转子-轴承系统弯扭耦合振动的数学模型.采用Rugge-Kutta数值积分方法计算模拟了转子升速过程中弯曲振动和扭转振动的不平衡响应,得到了转子弯曲振动的三维谱图和分岔图.分析发现,转子的弯曲振动会发生倍周期和概周期等复杂的非线性动力学行为.通过与不考虑弯扭耦合作用的系统特性进行比较,指出在转子弯曲振动临界转速附近,弯扭耦合作用对转子弯曲振动特性影响最大.数值分析揭示了扭转振动随转速升高,振幅基本保持不变,频率减小,有助于更深入地认识转子-轴承系统的弯扭耦合振动特性.
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| 关 键 词： | 转子-轴承系统 弯扭耦合振动 非线性 不平衡响应 |
| 收稿时间： | 2010-01-28 |
On coupled bending and torsion of rotor with nonlinear oil-film force |
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| Lin Haiying,Cui Ying. On coupled bending and torsion of rotor with nonlinear oil-film force[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(5): 588-591 |
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| Authors: | Lin Haiying Cui Ying |
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| Affiliation: | Lin Haiying(Research Institute of Unmanned Aerial Vehicle,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)Cui Ying(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | A mathematical model of a rotor with nonlinear oil-film force was presented,in which coupled bending and torsion were considered.The unbalance response of the rotor was numerically calculated by Rugge-Kutta method,and the bifurcation diagrams and waterfall plot were obtained to analyze dynamic characteristics of the system.The results reveale multiform complex nonlinear dynamic behavior of the rotor,that comprises periodic,double periodic and quasi-periodic motion.By comparing with dynamic characteristic of... |
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| Keywords: | rotor-bearing system coupled bending and torsion nonlinear oil-film force unbalance response |
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