噪声与振动控制2016，Vol.36Issue(5)：164-168,5.DOI:10.3969/j.issn.1006-1335.2016.05.034
某型发动机风扇叶片的损伤预测与振动分析
Damage Prediction and Vibration Analysis of the Fan Blades of an Engine
唐铃 1尚柏林 1高星伟 1陈鹏飞 1尹志朋1
作者信息
- 1. 空军工程大学 航空航天工程学院，西安 710038
- 折叠
摘要
Abstract
The method to prolong the service lifespan of the fan blades for a certain engine is studied. The measurement points and locations of fatigue damage and the resonance state monitoring are predicted, and the relevant measures are proposed. The blade model is established through Ansys, and the accuracy is verified by modal analysis and test. On this basis, model of the wheel and blade system is established. The location of fatigue damage is determined by static analysis of the system, and the resonance rotating speed, frequency and type are acquired by modal analysis of the prestressed system. The results show that the distributions of equivalent stress of the system are similar one another under different rotating speed loads. The blade has two critical locations for the fatigue damage, one is on the lug and the other is on the rafter. All the dynamic frequency of the blade-wheel system increases linearly with the increase of the rotating speed. High frequency exciting force cannot lead to resonance for this system, but low frequency exciting force can. And the resonance type is the first order bending vibration, the resonance rotating speed is 8 425.51 r/min, the resonance frequency is 567.29 Hz.关键词
振动与波/模态分析/危险考核部位/风扇叶片/损伤预测Key words
vibration and wave/modal analysis/risk assessment part/fan blade/damage predicticn分类
航空航天引用本文复制引用
唐铃,尚柏林,高星伟,陈鹏飞,尹志朋..某型发动机风扇叶片的损伤预测与振动分析[J].噪声与振动控制,2016,36(5):164-168,5.
