飞机前起落架舱结构损坏分析研究
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摘要
某飞机在进行机械备份系统通电检查时,前起落架舱传出巨大响声,后经检测发现前起落架舱相关结构损伤,螺栓断裂。本文以此为背景,分析了事故原因,对损坏的结构进行了受力分析,并建立了有限元模型,对前起落架舱其它关键结构进行了强度计算,排除了其它结构损伤。
Nose landing gear bay came out tremendous noise when the mechanical backup system was examining in the aircraft. Nose landing gear bay structure damages were detected and same bolts were broken. On the basis of it,in orde to find out the cause of accident,force analysis was done for the damage structure and finite element model of the damage structure was established. Finally,other nose landing gear bay structure were evaluated in the interest of excluding other structure damages.
Nose landing gear bay came out tremendous noise when the mechanical backup system was examining in the aircraft. Nose landing gear bay structure damages were detected and same bolts were broken. On the basis of it,in orde to find out the cause of accident,force analysis was done for the damage structure and finite element model of the damage structure was established. Finally,other nose landing gear bay structure were evaluated in the interest of excluding other structure damages.
引文
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[2]牛春匀(美).实用飞机结构工程设计[M].北京:航空工业出版社,2009Niu C Y.Airframe structural design[M].Beijing:Aviation Industral Press,2009(in Chinese)
[3]梁立孚,刘石泉,齐辉.飞行器结构力学[M].北京:中国宇航出版社,2003Liang L F,Liu S Q,Qi H.Structural mechanics of flight vehicle[M].Beijing:Chinese Aerospace Press,2003(in Chinese)
[4]Yang J N,Manning S D.Demonstration of probability analysis method for metallic airframes[J].Journal of Aircraft,1990,27(2):169-175
[5]Swift T.Damage tolerance capability[J].Fatigue Mechanics,1994,16(1):75-94
[6]Jeong D Y,Brewer J C.On the linkup of multiple cracks[J].Engineering Fracture Mechanics,1995,51(2):233-238