| 气流力、油膜力和质量偏心共同作用下的转子非线性动力学研究 |
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| 引用本文： | 黄来,黄丕维,刘永辉,魏继龙,邱应军,蒋北华.气流力、油膜力和质量偏心共同作用下的转子非线性动力学研究[J].汽轮机技术,2007,49(6):428-431,438. |
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| 作者姓名： | 黄来 黄丕维 刘永辉 魏继龙 邱应军 蒋北华 |
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| 作者单位： | 湖南省电力试验研究院,长沙,410007 |
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| 摘 要： | 以Jeffcott转子系统模型为研究对象,利用气流力模型和非稳态油膜力模型对转子运动的动力学特性进行研究。研究方法采用数值模拟技术,研究了转子系统的分岔和混沌特性,并且对随转速变化和转子质量偏心率的变化时转子的运动特性进行了详细的分析和研究。研究结果表明,在转速变化时,系统在经历周期运动之后进入混沌状态,在质量偏心率增大时,系统在油膜力、气流力和不平衡偏心质量的影响下,系统由概周期运动进入混沌状态。
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| 关 键 词： | 转子 数值模拟 气流力 油膜力 非线性 混沌 分岔 |
| 文章编号： | 1001-5884（2007）06-0428-04 |
| 收稿时间： | 2007-03-18 |
| 修稿时间： | 2007年3月18日 |
Study of Nonlinear Dynamic Characteristics of Turbine Rotor System under Oil-film Force Alford Force and Quality Eccentricity |
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| HUANG Lai,HUANG Pi-wei,LIU Yong-hui,WEI Ji-long,QIU Ying-jun,JIANG Bei-hua.Study of Nonlinear Dynamic Characteristics of Turbine Rotor System under Oil-film Force Alford Force and Quality Eccentricity[J].Turbine Technology,2007,49(6):428-431,438. |
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| Authors: | HUANG Lai HUANG Pi-wei LIU Yong-hui WEI Ji-long QIU Ying-jun JIANG Bei-hua |
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| Abstract: | Based on the Jeffcott rotor model system,the dynamic characteristics of rotor were analyzed with Alford force model and unsteady oil-film model.Numerical simulation technique was used for analyzing the bifurcation and chaos characteristics of rotor system,and the dynamic characteristics of rotor under the increasing rotary speed and quality eccentricity were studied in details.The results of calculation present that,the chaos occurs through the periodic-doubling bifurcations with increasing rotary speed,and when fixing the rotary speed,the chaos occurs through the probable periodic motion under oil-film force,Alford force and increasing quality eccentricity. |
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| Keywords: | turbine rotor numerical simulation Alford force oil-film force nonlinear chaos bifurcation |
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