航空发动机叶片气动弹性动力响应的数值方法研究进展

流动诱发振动造成的航空发动机叶片高周疲劳失效问题深受关注.对叶片的气动弹性动力响应研究的数值方法及进展进行了回顾,总结了航空发动机叶片振动响应实验研究和数值模拟研究的典型成果与特点,并对未来研究发展趋势进行展望.指出进一步的机理研究将集中于不稳定流动因素引发叶片强迫振动发作规律的探索以及更贴近流固耦合物理机制的气动弹性数值模拟方法的发展;在工程需求牵引下,建立适用于工程预测的动力响应分析模型,在设计过程中科学评价叶片气动弹性动力响应问题的潜在风险和发展流动控制基础上的气动阻尼减振技术值得进一步关注. 

A REVIEW OF NUMERICAL RESEARCH ON AEROELASTIC DYNAMICAL RESPONSE OF AERO-ENGINE BLADES

The high cycle fatigue failure of aero-engine blades occurs frequently. Aeroelastic dynamic response is a major concern in engineer applications. A review of numerical researches on blade aeroelastic dynamic response is presented in the paper, including numerical simulation, test study and possible research trends. The flow-induced vibration mechanism of blade dynamic response and the numerical method about fluid-structure interaction will be the focus in further mechanism study. For engineer applications, it is valuable to develop a prediction model for dynamic response and to evaluate its potential risks with resonance in the design process. And more attention should be paid on the aerodynamic damping technology based on flow control.