气流激励下的叶片高周疲劳寿命研究的发展

Review on investigation of high cycle fatigue failures for the aero engine blade

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.

High cycle fatigue(HCF) of blades caused by forced vibration is an outstanding problem for turbo engines,so the domestic and foreign research progress on high cycle life of blades in recent years are overviewed,the research methods are summarized and suggestions on further researches are put forward.The important ways to develop prediction method of high cycle life on blades are described as follows.The numerical method to obtain the dynamical responses under aerodynamic forces must be perfected,and the pro...