| 双转子系统轴承座松动的动力学模型及故障特性 |
| |
| 引用本文： | 徐洪志,王南飞,蒋东翔.双转子系统轴承座松动的动力学模型及故障特性[J].航空动力学报,2016,31(11):2781-2794. |
| |
| 作者姓名： | 徐洪志 王南飞 蒋东翔 |
| |
| 作者单位： | 清华大学机械工程学院热能工程系电力系统和发电设备控制及仿真国家重点实验室,北京,100084 |
| |
| 基金项目： | 国家自然科学基金（11572167） |
| |
| 摘 要： | 针对双转子系统轴承座松动故障,基于实验台双转子结构,考虑松动轴承座的3自由度平面刚体运动,引入碰撞恢复系数,建立双转子系统轴承座松动的动力学模型.基于Timoshenko梁单元,利用有限元和刚体运动学方法,采用Newmark-β算法进行数值仿真,对轴承座松动故障时内、外转子运动的动力学特性进行了研究.同时,进行了两种不同转速组合下双转子系统的松动实验,结果基本相同.将仿真结果与实验结果对比分析,结果表明:轴承座松动故障时,松动转子振动位移波形有“削波”现象,内、外转子振动位移频谱不但含有两转子基频的差频与和频,还包含支承松动转子的2倍频,3倍频等分量;低频段谱线较多,含有分频成分等;转子位移频谱中还含有较少的组合频率成分等.轴承座单侧松动时,松动转子的轴心轨迹呈拉伸的类椭圆状.
|
| 关 键 词： | 轴承座松动 双转子 刚体运动 轴心轨迹 有限元 动力学模型 振动频谱 |
| 收稿时间： | 2/7/2015 12:00:00 AM |
Bearing pedestal looseness dynamic model of dual rotor system and fault feature |
| |
| XU Hong-zhi,WANG Nan-fei and JIANG Dong-xiang.Bearing pedestal looseness dynamic model of dual rotor system and fault feature[J].Journal of Aerospace Power,2016,31(11):2781-2794. |
| |
| Authors: | XU Hong-zhi WANG Nan-fei and JIANG Dong-xiang |
| |
| Institution: | State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Thermal Engineering, School of Mechanical Engineering, Tsinghua University, Beijing 100084, China,State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Thermal Engineering, School of Mechanical Engineering, Tsinghua University, Beijing 100084, China and State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Thermal Engineering, School of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | |
| |
| Keywords: | bearing pedestal looseness dual rotor rigid motion axis trajectory finite element dynamic model vibration spectrum |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
