| 航空发动机转子-滚动轴承-支承-机匣耦合系统的碰摩故障分析与验证 |
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| 引用本文： | 陈果,李成刚,王德友.航空发动机转子-滚动轴承-支承-机匣耦合系统的碰摩故障分析与验证[J].航空动力学报,2008,23(7):1304-1311. |
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| 作者姓名： | 陈果 李成刚 王德友 |
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| 作者单位： | 1.南京航空航天大学 民航学院, 南京 210016 |
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| 基金项目： | 国家自然科学基金
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航空基础科学基金 |
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| 摘 要： | 针对实际的航空发动机转子系统,建立了含碰摩故障的转子-滚动轴承-支承-机匣耦合动力学模型.在模型中,考虑了机匣运动,弹性支承、挤压油膜阻尼,充分考虑了轴承间隙、滚珠与滚道的非线性赫兹接触力以及由滚动轴承支撑刚度变化而产生的变柔性(VaryingcomplianceVC)振动.运用数值积分方法获取了系统响应,并建立带机匣的航空发动机转子实验器进行碰摩故障实验,仿真结果与实验结果比较分析表明了模型的有效性.
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| 关 键 词： | 航空发动机 转子 滚动轴承 弹性支承 机匣 碰摩 |
| 收稿时间： | 2007/6/28 0:00:00 |
| 修稿时间： | 2007/9/25 0:00:00 |
Nonlinear dynamic analysis and experiment verification of rubbing faults of rotor-ball bearing-support-stator coupling system for aero-engine |
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| CHEN Guo,LI Cheng-gang and WANG De-you.Nonlinear dynamic analysis and experiment verification of rubbing faults of rotor-ball bearing-support-stator coupling system for aero-engine[J].Journal of Aerospace Power,2008,23(7):1304-1311. |
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| Authors: | CHEN Guo LI Cheng-gang and WANG De-you |
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| Institution: | 1.College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China2.Strength and Vibration Technique Center, Shenyang Aero-engine Design Institute, Shenyang 110015, China |
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| Abstract: | A new rotor-ball bearing-support-stator coupling system dynamic model including rubbing fault was established for rotor-bearing system of practical aeroengine.In the model,the stator motion,the flexible support,squeeze film damper(SFD) were considered,and the nonlinear factors of ball bearing such as the clearance of bearing,nonlinear Hertzian contract force between balls and races,and the varying compliance vibration because of periodical variety of contact position between balls and races were modeled.The numerical integral method was employed to obtain system's responses,and an aeroengine tester with stator was established to carry out rubbing fault experiment.Finally,the simulation results from rotor-ball bearing-support-stator coupling model were compared with the experiment results in order to indicate the validity of the new model. |
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| Keywords: | aero-engine rotor ball bearing flexible support stator rubbing |
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