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航空发动机中叶片振动引起的高循环疲劳失效是尤为突出的问题,对近年来国内外关于叶片高周疲劳寿命的基本方法和研究进展进行了较为详细的综述,总结了目前叶片高周疲劳寿命研究的方法和特点.指出开展叶片高周疲劳寿命预估方法研究的重要途径是完善叶片系统在尾流激励下的动力响应分析方法和将概率设计引进叶片高周疲劳寿命评估.而进行叶片系统的振动响应分析,依赖于轮盘-叶片一体的三维实体模型的精确建立和适合于工程应用的流固耦合求解技术的完善.
Aero-engine blade vibration caused by high cycle fatigue failure is particularly prominent issues in recent years at home and abroad on the blade high-cycle fatigue life of the basic methods and research progress made a more detailed overview of the current high-cycle fatigue life of the blade The paper points out the important ways to carry out the prediction of the high-cycle fatigue life of the blade is to improve the dynamic response analysis of the blade system under the wake excitation and to introduce the probability design into the evaluation of the high-cycle fatigue life of the blade, Vibration response analysis relies on the exact establishment of the roulette-blade integrated 3D solid model and the improvement of the fluid-solid coupling solution suitable for engineering application.