全机疲劳试验几个问题的探讨  

Discussions on some problems of full-scale aircraft fatigue test

作　　者：张立新[1] ZHANG Lixin(AVIC Chengdu Aircraft Design and Research Institute,Chengdu 610091,China)

机构地区：[1]航空工业成都飞机设计研究所,成都610091

出　　处：《航空工程进展》2024年第4期10-15,26,共7页Advances in Aeronautical Science and Engineering

摘　　要：全机疲劳试验是规范要求的保障飞机结构完整性以及满足适航要求的大型、复杂以及持续时间长的地面验证试验。全机疲劳试验的几个重要问题,例如试验目的、载荷谱、持续时间和分散系数等,是飞机设计师/工程师非常关注和充分讨论的问题,其中的分散系数也是研究者研究较多的问题之一。针对近年来完成的多个飞机型号的全机疲劳试验,本文介绍了对上述几个问题的研究和认识,对比了国内外5种型号战斗机的疲劳设计与全机疲劳试验情况,提出了关于全机疲劳试验的工程实用的一些建议。本文的研究可以为其他飞机全机疲劳试验提供有益的参考。Full-scale aircraft fatigue test is a large,complex and long-lasting ground verification test required by the specification to sustain aircraft structural integrity program and meet airworthiness requirements.Several important issues of full-scale aircraft fatigue test,such as test objective,load spectrum,duration and scatter factor,are the key concern and widely discussed by aircraft designer/engineer.The scatter factor is also a problem studied by scholars.In recent years,aiming at the full-scale fatigue tests of several aircraft programs,the study and understanding of the above-mentioned issues are introduced in this paper,and the fatigue design and full-scale fatigue tests of five fighter jets in China and abroad are compared.Some practical engineering suggestions for full-scale aircraft fatigue test are put forward.The research in this paper can provide important reference for other aircraft fullscale fatigue tests.

关 键 词：全机疲劳试验 耐久性 损伤容限 载荷谱 持续时间 分散系数 

分 类 号：V216.3[航空宇航科学与技术—航空宇航推进理论与工程]