| 双转子系统碰摩有限元接触分析模型及故障诊断 |
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| 引用本文： | 单颖春,刘献栋,何田,李其汉.双转子系统碰摩有限元接触分析模型及故障诊断[J].航空动力学报,2005,20(5):789-794. |
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| 作者姓名： | 单颖春 刘献栋 何田 李其汉 |
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| 作者单位： | 1.北京航空航天大学汽车工程系,北京100083 |
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| 基金项目： | 航空科学基金资助(03I51037) |
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| 摘 要： | 针对常用碰摩力模型的不足,应用AN SY S软件在求解转静子之间的碰摩力与法向相对位移之间的关系的基础上得到了碰摩力模型,并与整体传递系数法相结合建立转静件碰摩的动力学方程。采用整体传递系数法计算转子系统的动力特性,进而求解双转子系统的瞬态响应。利用时域波形、频谱分析和小波变换对响应进行了分析,得出并分析了相关的故障特征。
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| 关 键 词： | 航空、航天推进系统 碰摩模型 有限元 故障诊断 双转子系统 |
| 文章编号： | 1000-8055(2005)05-0789-06 |
| 收稿时间： | 2004/10/19 0:00:00 |
| 修稿时间： | 2004年10月19 |
Research on the Finite Element Impact-Contact Analytical Model of Dual-Rotor System and its Diagnosis Method |
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| SHAN Ying-Chun,LIU Xiandong,HE Tian and LI Qi-han.Research on the Finite Element Impact-Contact Analytical Model of Dual-Rotor System and its Diagnosis Method[J].Journal of Aerospace Power,2005,20(5):789-794. |
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| Authors: | SHAN Ying-Chun LIU Xiandong HE Tian and LI Qi-han |
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| Institution: | 1.Department of Automobile Engineering,Beijing University of Aeronautics and Astronautics,Beijing100083,China2.School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing100083,China |
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| Abstract: | Considering the shortages of common rotor-stator rubbing models,using ANSYS software,a new rotor-stator rubbing model was presented based on the relationship between relative normal displacement and normal contact force.Then the rotor-stator dynamic equations were established by combining with the Whole Transfer Coefficient Method(WTCM).The dynamic characteristics were calculated by the WTCM,and then the transient responses of dual-rotor system were solved.The responses were analyzed by the time-domain curve,the Fourier transform and the wavelet transform respectively.Furthermore the fault characteristics were deduced and discussed.These results provide some reference for fault diagnosis of dual-rotor system. |
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| Keywords: | aerospace propulsion system rubbing model finite element fault diagnosis dual-rotor system |
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