钛合金空心风扇叶片模拟鸟撞研究  

Research on Simulant Bird Strike of Titanium Alloy Hollow Fan Blade

作　　者：刘志强 李从富 贾林 柴象海 Liu Zhiqiang;Li Congfu;Jia Lin;Chai Xianghai(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200241,China)

机构地区：[1]中国航发商用航空发动机有限责任公司,上海200241

出　　处：《航空科学技术》2022年第9期7-15,共9页Aeronautical Science & Technology

基　　金：国家科技重大专项(J2019-Ⅳ-0019-0087)

摘　　要：针对某钛合金空心风扇叶片,根据适航鸟撞条款的要求,开展叶片静止状态撞击参数敏感性分析,包括中鸟撞击不同叶片高度、不同鸟撞速度、不同发动机转速下叶片应力应变分布和叶片变形程度,以及大鸟撞击不同叶片高度叶片应力应变分布和叶片变形程度,得到中鸟鸟撞最危险的工况和大鸟鸟撞最危险、次危险工况。开展了叶片静止状态下的中鸟最危险工况试验,试验后叶片无损伤。开展了叶片静止状态下的大鸟次危险工况试验,试验后叶片有损伤,但未断裂。两个试验与仿真结果吻合良好,研究可为空心风扇叶片强度设计验证和旋转状态下鸟撞试验提供支撑。As per the bird strike term of airworthiness,bird strike parameters sensitivity analys is has been performed for some titanium alloy hollow fan blade in static state,including blade strain&stress distribution and deformation by middle bird strike at different height of blade,in different bird speed,with different engine spin speed;blade strain&stress distribution and deformation by middle bird strike at different height of blade,drawing the conclusion of most critical condition of middle bird strike and most&subsidiary critical condition of big bird strike.Middle bird strike test at most critical condition with static fan has been conducted and the blade has no damage after test.Big bird strike test at most critical condition with static fan has been conducted and the blade has damage after test,but doesn't break.The two tests are both consistent with simulation.The study results can provide support to verify the strength of fan blade and bird strike test of fan in rotational state.

关 键 词：钛合金 空心风扇叶片 中鸟撞击 大鸟撞击 鸟撞试验 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]