| 转子-滚动轴承-机匣耦合系统的不平衡-碰摩耦合故障非线性动力学响应分析 |
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| 引用本文： | 陈果.转子-滚动轴承-机匣耦合系统的不平衡-碰摩耦合故障非线性动力学响应分析[J].航空动力学报,2007,22(10):1771-1778. |
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| 作者姓名： | 陈果 |
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| 作者单位： | 南京航空航天大学,民航学院,南京,210016 |
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| 摘 要： | 建立了含转子不平衡-碰摩耦合故障的转子-滚动轴承-机匣耦合动力学模型.在模型中,充分考虑了转子系统的不平衡和碰摩故障的耦合.对滚动轴承模型,充分考虑了轴承间隙、滚珠与滚道的非线性赫兹接触以及由滚动轴承支撑刚度变化而产生的VC(Varying compliance)振动.运用数值积分方法获取了系统响应,研究了系统的分叉与混沌运动,分析了旋转速度、碰摩刚度、转子偏心量,轴承座-机匣刚度以及机匣-基础刚度对系统响应的影响,得到了在转子不平衡和碰摩故障耦合下的转子-滚动轴承-机匣耦合系统动力响应规律.
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| 关 键 词： | 航空、航天推进系统 转子 滚动轴承 机匣 不平衡 碰摩 故障耦合 转子 滚动轴承 机匣 耦合系统 平衡 碰摩耦合故障 非线性 力学响应分析 coupling system faults dynamic response analysis 规律 动力响应 影响 基础刚度 轴承座 偏心量 旋转速度 混沌运动 分叉 |
| 文章编号： | 1000-8055(2007)10-1771-08 |
| 收稿时间： | 2006/10/12 0:00:00 |
| 修稿时间： | 2006年10月12 |
Nonlinear dynamic response analysis of unbalance-rubbing coupling faults of rotor-ball bearing-stator coupling system |
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| CHEN Guo.Nonlinear dynamic response analysis of unbalance-rubbing coupling faults of rotor-ball bearing-stator coupling system[J].Journal of Aerospace Power,2007,22(10):1771-1778. |
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| Authors: | CHEN Guo |
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| Institution: | College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 |
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| Abstract: | A new rotor-ball bearing-stator coupling dynamic model was established for the unbalance-rubbing coupling faults.In the model,the rotor mass unbalance and rubbing faults were fully considered.The nonlinear factors of ball bearing,such as the clearance of bearing,nonlinear Hertzian contract between balls and races,and the varying compliance(VC) of bearing support were modeled.Moreover,the numerical integral method was employed to obtain system's responses,whereas the bifurcation and chaos motion were analyzed,followed by the effects of rotational speed,rubbing stiffness,rotor eccentricity,bearing house-stator stiffness,and stator-foundation stiffness on dynamic responses.Therefore,the non-linear dynamic response laws of rotor-ball bearing-stator system under unbalance and rubbing coupling faults were obtained. |
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| Keywords: | aerospace propulsion system rotor ball bearing stator unbalance rubbing faults coupling |
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