| 吴英祥1，张亚双2，陈果3.考虑航空发动机支承不同心的整机动力学建模及分析[J].航空发动机,2018,44(5): |
| 考虑航空发动机支承不同心的整机动力学建模及分析 |
| Dynamic Modeling and Analysis of Aeroengine with Supporting Non-Concentricity |
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| DOI： |
| 中文关键词: 支承 不同心 轴承间隙 整机振动 航空发动机 |
| 英文关键词:Non-concentricity bearing clearance whole aeroengine vibration aeroengine |
| 基金项目:国家自然科学基金（51675263）资助 |
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| 中文摘要: |
| 为了分析支承不同心情况下航空发动机整机的动力特性，提出1 种航空发动机支点支承不同心故障的建模和分析方
法，将支承不同心转化为支点轴承间隙模型，并将该模型引入航空发动机整机模型中。以某型双转子涡扇发动机的支承不同心为
例，对支承不同心所引发的航空发动机整机振动进行仿真分析，结果表明：支承不同心对支点的轴承力影响很大，是导致滚动轴承
疲劳破坏的重要原因之一，并且机匣加速度响应对支承不同心不够敏感。仿真结果验证了所建立的支承不同心模型的有效性 |
| 英文摘要: |
| A method of modeling and analysis was proposed，which could use aeroengine fulcrum to support non-concentricity fault.
The supporting non -concentricity was transformed into the bearing clearance model，and the model was introduced into the whole
aeroengine model. Taking the supporting non-concentricity of a turbofan aeroengine with double rotors as an example，the vibration of whole
aeroengine caused by supporting non-concentricity was simulated and analyzed. The results show that the bearing force of bearing is greatly
influenced by supporting non-concentricity，which is one of the important causes of fatigue failure of rolling bearing，and the acceleration
response of casing is insensitivity for supporting non-concentricity. The validity of the proposed supporting non-concentricity model is
verified by the simulation results |
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