航空发动机吸鸟适航验证关键参数分析方法

发布时间：2019-01-22 16:45

【摘要】：发展了一种确定航空发动机风扇叶片吸鸟适航验证用关键参数的分析方法。首先分析关键参数,提出用综合关键撞击参数SCIP评估鸟撞击叶片损伤效果及确定试验用关键吸鸟参数CIP的方法,建立SPH法鸟撞旋转风扇叶片有限元模型,进行鸟撞击数值模拟,分析鸟速、风扇转速、撞击位置等参数对鸟撞击数值模拟结果的影响,得出各个状态下综合损伤参数。结果表明,在CIP=F(72 m/s,70%,100%)试验条件下,鸟撞击叶片的综合损伤最为严重,并据此确定一组吸鸟适航验证用关键吸鸟参数。
[Abstract]:An analytical method for determining the key parameters for airworthiness validation of aeroengine fan blades is developed. Firstly, the key parameters are analyzed, and the method of evaluating the damage effect of bird impingement blade by synthesizing the key impact parameter SCIP and determining the key bird suction parameter CIP is put forward. The finite element model of bird impact rotating fan blade with SPH method is established, and the numerical simulation of bird impact is carried out. The effects of bird speed, fan speed and impact position on the numerical simulation results of bird impact are analyzed, and the comprehensive damage parameters are obtained. The results show that under the condition of CIP=F (72 m / s / s 70%), the comprehensive damage of bird impingement blade is the most serious, and a group of key parameters of bird suction for airworthiness verification are determined.
【作者单位】：南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室;
【基金】：国家自然科学基金面上项目(51475227)资助
【分类号】：V232

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