民用客机短舱进气道唇口抗鸟撞试验研究与仿真分析  

Experimental research and simulation analysis on anti-bird strike of the nacelle inlet lip of a civil airliner

作　　者：冯荣欣 邢运 倪阳 杨先锋 汲生成 邓志 FENG Rong-xin;XING Yun;NI Yang;YANG Xian-feng;JI Sheng-cheng;DENG Zhi(Advanced Material&Structure Lab,Beijing Key Laboratory of Commercial Airplane Structure and Composite Material,COMAC Beijing Aircraft Technology Research Institute,Beijing 102211,China;Institute of Solid,Beihang University,Beijing 100191,China;COMAC Beijing Aircraft Technology Research Institute,Beijing 102211,China)

机构地区：[1]中国商飞北京民用飞机技术研究中心,民用飞机结构与复合材料北京市重点实验室先进材料结构实验室,北京102211 [2]北京航空航天大学固体力学研究所,北京100191 [3]中国商飞北京民用飞机技术研究中心,北京102211

出　　处：《复合材料科学与工程》2022年第9期102-108,共7页Composites Science and Engineering

摘　　要：为了研究民用客机短舱进气道结构的抗鸟撞性能,本文针对复合材料层合板结构的短舱进气道开展了鸟撞试验研究,试验研究结果表明:短舱进气道结构出现了唇口与搭接带板铆接处发生撕裂、唇口与前墙连接处紧固件发生拉脱、前墙与内外壁板连接处发生凹陷变形、进气道外壁板出现裂纹等损伤。此外,采用PAM-CRASH软件对短舱进气道结构进行鸟撞试验的有限元仿真验证,数值仿真结果表明:鸟体撞击模式、撞击过程、唇口结构损伤形貌、进气道前墙以及内外壁板上的应变与试验结果基本一致,表明建立的鸟撞数值仿真模型能够较好地模拟短舱进气道唇口的变形和失效行为。鸟撞试验及数值仿真分析研究结果表明短舱进气道唇口尽管损伤严重但前墙未被击穿,验证了结构的抗鸟撞性能。该研究所得结果可为短舱进气道的结构设计提供参考。In order to study the bird strike resistance performance of the nacelle inlet structure of a civil airliner,this paper carried out a bird strike test study on the nacelle inlet of the composite laminate structure.The experimental research results show that the nacelle inlet structure has tearing at the riveting point between the lip and the lap strip,the fasteners at the connection between the lip and the front wall are pulled off,depression and deformation occurred at the connection of front wall and the inner and outer wall plate,and the outer wall plate of the inlet appeared cracks and other damages.In addition,PAM-CRASH software is used to perform bird impact finite element simulation verification on the nacelle inlet structure.The numerical simulation results show:Bird impact mode,impact process,lip structure damage morphology,and the strain on the front wall and inner and outer wall panels is basically consistent with the test results,indicating that the established bird strike numerical simulation model can better simulate the deformation and failure behavior of the nacelle inlet lip.The bird strike test and numerical simulation analysis show that the front wall of the nacelle inlet was not penetrated despite the lip′s serious damage,which verified the bird strike resistance of the structure.The results of this study can provide references for the structural design of the nacelle inlet.

关 键 词：鸟撞试验 短舱进气道 冲击动力学 冲击仿真 

分 类 号：TB332[一般工业技术—材料科学与工程]