| 碰摩转子—油膜轴承系统的全局动力学研究 |
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| 引用本文： | 曾旭焱,侍玉青,刘军,郭遥.碰摩转子—油膜轴承系统的全局动力学研究[J].铁道科学与工程学报,2021,18(2):494-501. |
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| 作者姓名： | 曾旭焱 侍玉青 刘军 郭遥 |
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| 作者单位： | 兰州交通大学机电工程学院,甘肃兰州 730070;甘肃省轨道交通装备系统动力学与可靠性重点实验室,甘肃兰州 730070;兰州交通大学机电工程学院,甘肃兰州 730070;甘肃省轨道交通装备系统动力学与可靠性重点实验室,甘肃兰州 730070;兰州交通大学机电工程学院,甘肃兰州 730070;甘肃省轨道交通装备系统动力学与可靠性重点实验室,甘肃兰州 730070;湖南工商大学计算机与信息工程学院,湖南长沙 410205 |
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| 基金项目： | 兰州交通大学青年科学研究基金项目 |
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| 摘 要： | 考虑滑动轴承的非线性油膜力和转定子的碰摩力,建立了含碰摩故障的单盘转子-滑动轴承耦合系统动力学模型。运用四阶变步长的龙格-库塔-基尔法获得系统的非线性响应,利用Poincaré型的简单胞映射法对转子系统进行了全局动力学分析。研究结果表明:随着转子转速的增加,系统存在多个周期解共存以及周期解与混沌解共存现象。最后列举了转子系统在不良参数条件下,通过合理控制系统的初值条件而获得理想系统响应的运用。
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| 关 键 词： | 转子-轴承系统 滑动轴承 转子动力学 碰摩 吸引域 |
Study on global dynamic characteristic of rubbing rotor—oil film bearing system |
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| ZENG Xuyan,SHI Yuqing,LIU Jun,GUO Yao.Study on global dynamic characteristic of rubbing rotor—oil film bearing system[J].Journal of Railway Science and Engineering,2021,18(2):494-501. |
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| Authors: | ZENG Xuyan SHI Yuqing LIU Jun GUO Yao |
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| Institution: | (School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Gansu Provincial Key Laboratory of System Dynamics and Reliability of Rail Transport Equipment,Lanzhou 730070,China;College of Computer and Information Engineering,Hunan University of Technology and Business,Changsha 410205,China) |
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| Abstract: | A dynamic model of the coupling system of single-disk rotor and sliding bearing including rub-impact fault was established,which considered the non-linear oil film force of the sliding bearing and the rubbing force of the rotor and stator.The fourth-order Runge-Kutta-Gill method with varying steps was used to solve the dynamic equation and obtain the model’s vibration response,and the global dynamics analysis of the rotor system was performed by using a simple cell mapping method of Poincarétype.The results show that:With the increase of the rotation speed,there are multiple periodic solutions coexisting and periodic solutions coexisting with chaotic motion.Finally,the application of the ideal system response is obtained by reasonably controlling the initial value conditions of the rotor system under the condition of bad parameters. |
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| Keywords: | rotor-bearing system sliding bearing rotordynamics rub-impact domain of attraction |
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