| 双跨转子系统裂纹-松动耦合故障的非线性响应 |
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| 引用本文： | 罗跃纲,闻邦椿.双跨转子系统裂纹-松动耦合故障的非线性响应[J].航空动力学报,2007,22(6):996-1001. |
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| 作者姓名： | 罗跃纲 闻邦椿 |
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| 作者单位： | 1. 大连民族学院,机电与控制工程研究所,大连116600;东北大学,机械工程与自动化学院,沈阳110004
2. 东北大学,机械工程与自动化学院,沈阳110004 |
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| 基金项目： | 国家自然科学基金
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国家自然科学基金 |
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| 摘 要： | 建立了带有裂纹-支承松动耦合故障的具有三轴承支承的双跨弹性转子系统的动力学模型,并对系统裂纹、松动及其耦合故障对系统非线性动力学响应的影响进行了数值仿真研究.当只有裂纹故障时,在亚临界转速和超临界转速区均有拟周期运动;当只有松动故障时,在亚临界转速区为拟周期运动,而在超临界转速区为混沌运动.当出现裂纹-松动耦合故障时,松动故障的影响占主要地位,同时有较大范围的周期3运动区间出现.随着裂纹深度的增加,其影响作用逐渐增大.研究结果为转子-轴承系统故障诊断、动态设计和安全运行提供了理论参考.
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| 关 键 词： | 转子-轴承系统 裂纹 松动 非线性响应 拟周期 混沌 双跨 转子系统 裂纹深度 耦合故障 线性响应 pedestal looseness crack faults coupling system 理论 安全运行 动态设计 故障诊断 轴承系统 结果 仿真研究 作用 区间 混沌运动 |
| 文章编号： | 1000-8055(2007)06-0996-06 |
| 收稿时间： | 6/1/2006 12:00:00 AM |
| 修稿时间： | 2006年6月1日 |
Nonlinear responses of two-span rotor-bearing system with coupling faults of crack and pedestal looseness |
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| LUO Yue-gang and WEN Bang-chun.Nonlinear responses of two-span rotor-bearing system with coupling faults of crack and pedestal looseness[J].Journal of Aerospace Power,2007,22(6):996-1001. |
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| Authors: | LUO Yue-gang and WEN Bang-chun |
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| Affiliation: | Research Institute of Mechanism Electron and Control Engineering, Dalian Nationalities University, Dalian 116600, China;School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China;School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China |
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| Abstract: | A dynamic model was set up for the two-span rotor-bearing system with coupling faults of crack and pedestal looseness supported on three plain journal bearings.The nonlinear dynamics behaviors that induced by crack,pedestal looseness and coupling faults are numerically studied.In the case of crack faults,quasi-periodic motion appears within the range of sub-and super-critical speed range.When the pedestal looseness fault occurs,the quasi-periodic motion appears in the sub-critical speed range,but chaotic motion takes place within the super-critical speed range.The pedestal looseness fault is the main influence on the coupling fault system,and there is period-3 motion appearing in the system.The influence of crack fault increases along with the depth of crack.The results may provide theoretical references for fault diagnosis,dynamic design,and safe operation of rotor-bearing system. |
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| Keywords: | rotor-bearing system crack pedestal looseness non-linear response quasi-periodic chaos |
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