摘要
为保证直升机结构安全可靠、经济、易维护,疲劳强度工作应贯穿整个设计研制和使用过程。在直升机研制过程中,结构疲劳强度工作分为结构细节设计的疲劳设计阶段,初步疲劳和损伤容限评估和最终疲劳和损伤容限评估,三个阶段。本文对各阶段疲劳工作的内容和方法,以及飞行谱的编制和飞行载荷谱的计算等疲劳关键问题进行了简略的评述。为我国直升机结构疲劳设计工作提供一些可供借鉴的思路。
To assure safe,economy and maintainability of helicopter structure,the fatigue strength task should be done through the helicopter design process.In a helicopter development,fatigue strength tasks can be divided three phases:the fatigue design in the detail design of structures,the preliminary fatigue and damage tolerant estimate and the final fatigue and damage tolerant evaluation.In this paper,reviewed summarily the some important issues,such as the content and the method of fatigue strength performing in each phase,and the usage spectra and the flight load spectra calculation,to offer some references for our helicopter structure fatigue design.
出处
《直升机技术》
2004年第4期1-6,共6页
Helicopter Technique
关键词
结构
疲劳
损伤容限
直升机
structure
fatigue
damage tolerant
helicopter
