摘要
以发动机风扇转子为研究对象,参考适航标准完成真空、旋转状态下的风扇转子鸟撞击试验。对试验后的风扇转子叶片进行损伤分析,试验结果显示:风扇转子叶片出现了叶尖断裂,前缘撕裂、凹陷、卷边,凸肩错位、搭接,掉块等损伤。利用PAM-CRASH冲击分析软件进行仿真分析,仿真结果显示:鸟弹撞击模式、撞击过程、叶片及凸肩损伤模式与试验结果基本一致,叶片最大损伤与试验结果基本相同,但损伤叶片数量少于试验结果。通过试验及仿真分析完成了该发动机风扇转子鸟撞击能力考核,叶片损伤严重但仍在风扇机匣包容性控制范围内,不会出现高能碎片飞出从而影响飞机安全的情况。本文试验及仿真分析方法可为其他风扇转子类鸟撞击试验提供参考依据。
Bird-strike test of gas turbine rotating fan blade is performed in the vacuum chamber based on the airworthiness standards.After test,the inspection shows that the fan blades are seriously damaged,including blade fracture,leading edge tear,pitting,curl,shoulder misalignment,overlapping and chipping,etc.Furthermore,the impact process is simulated by PAM-CRASH software,and the simulation result shows that the bird-strike mode,impact process and damage mode of blades and shrouds agree quite well with the test result.The prediction of the most serious damage level is the same with the test result;however,the number of damaged blades is less than that in the test.The anti-impact evaluation test and simulation reveal that the fan blades under investigation are seriously damaged,however,there is no high energy debris released from the rotor,which is still under the control within the containment requirement of the fan casing.The proposed method in test and simulation can be utilized as reference when performing similar fan blade bird-strike test.
作者
黄福增
刘永泉
张东明
魏峰
张海洋
汤忠斌
HUANG Fuzeng;LIU Yongquan;ZHANG Dongming;WEI Feng;ZHANG Haiyang;TANG Zhongbin(AECC Shenyang Engine Research Institude,Shenyang 110015,Liaoning,China;Key Laboratory of Impact Dynamicson AeroEngine,Shenyang 110015,Liaoning,China;Joint Laboratory of Impact Dynamicsin Aeroengine between AECC Shenyang EngineResearch Institute and Northwestern Polytechnical University,Shenyang 110015,Liaoning,China;Northwestern PolytechnicalUniversity,Xi’an 710072,Shanxi,China)
出处
《实验力学》
CSCD
北大核心
2020年第6期1136-1146,共11页
Journal of Experimental Mechanics
