评定叶片鸟撞击损伤的参数与方法

Parameters and Methods for Evaluating Bird Impact Damage of Fan/Compressor Blade

探讨了在叶片抗岛撞击损伤研究中叶片损伤能力的评定参数与评定方法。结合发动机设计准则与设计规范的要求,提出了2个用于评定叶片损伤能力的叶片变形损伤参数和塑性应变损伤参数;经对模型叶片在不同撞击位置进行的鸟撞击损伤评定。

The parameters and methods for evaluating bird impact damage of fan/compressor blade are discussed. Two non- dimensional parameters, the blade deformation damage index and the plastic strain damage index, are defined according to the aircraft engine design standards and specifications. The results of bird impact damage at different model blade locations have shown the feasibility of this method.