| 关于对流体激振及离心叶轮转子分岔特性的研究 |
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| 引用本文： | 胡朋志,李同杰,孙启国.关于对流体激振及离心叶轮转子分岔特性的研究[J].兰州铁道学院学报,2006,25(3):5-8. |
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| 作者姓名： | 胡朋志 李同杰 孙启国 |
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| 作者单位： | 兰州交通大学系统分析与集成研究所，兰州交通大学系统分析与集成研究所，兰州交通大学系统分析与集成研究所 甘肃兰州730070，铁道第五勘察设计院，北京102600，甘肃兰州730070，甘肃兰州730070 |
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| 基金项目： | 甘肃省自然科学基金资助项目（ZS031-B25-009-G） |
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| 摘 要： | 将叶轮转子系统简化为Jeffcott转子系统,并考虑到系统流体激振力,采用短轴承非线性油膜力模型,求出了在非线性油膜力作用下的运动微分方程,采用Runge-Kutte法计算了转子在不同转速下的响应,通过分岔图,轨迹图,相图和Poincare映射图,研究了转子系统的分叉特性.并通过改变系统参数质量偏心,做了系统分岔特性的比较,结果表明流体激振力和质量偏心将影响系统的稳定性能.
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| 关 键 词： | 离心泵 流体激振力 转子动力学 非线性油膜力 分岔 |
| 文章编号： | 1001-4373(2006)03-0005-04 |
| 收稿时间： | 2005-12-08 |
| 修稿时间： | 2005年12月8日 |
Study on Fluid Exciting Force and Bifurcation Characteristics of Centrifugal Impeller Rotor |
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| Hu Pengzhi,Li Tongjie,Sun Qiguo.Study on Fluid Exciting Force and Bifurcation Characteristics of Centrifugal Impeller Rotor[J].Journal of Lanzhou Railway University,2006,25(3):5-8. |
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| Authors: | Hu Pengzhi Li Tongjie Sun Qiguo |
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| Abstract: | The motion differential equations are derived by simplifying the impeller rotor system as Jeffcott rotor,taking into account fluid exciting force and using nonlinear oil film forces model of short hydrodynamic bearing.the system response in different rotating speed of rotor is calculated by using Runge-kutta method.Moreover,the bifurcation characteristics of rotor system are studied by bifurcation diagram,phase diagram and Poincare maps.In addition,the bifurcation characteristics of rotor system are compared by changing the mass eccentric,and the results show that the fluid exciting force and the mass eccentric will influence the stability of system. |
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| Keywords: | centrifugal pump fluid exciting force rotor dynamic nonlinear oil force bifurcation |
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