基于DFR的战斗机疲劳关键部位日历寿命设计方法
收稿日期: 2022-06-14
修回日期: 2022-06-29
录用日期: 2022-07-13
网络出版日期: 2022-07-22
基金资助
国家级项目
Calendar life design method for critical fatigue parts of fighter based on DFR method
Received date: 2022-06-14
Revised date: 2022-06-29
Accepted date: 2022-07-13
Online published: 2022-07-22
Supported by
National Level Project
陈跃良 , 吴省均 , 卞贵学 , 张勇 , 张柱柱 . 基于DFR的战斗机疲劳关键部位日历寿命设计方法[J]. 航空学报, 2023 , 44(10) : 227614 -227614 . DOI: 10.7527/S1000-6893,2022.27614
The key problem of calendar life in critical fatigue fighter parts lies in the lack of universal calendar life design methods. To solve this problem, we first discuss the influence of the environment during ground parking, low altitude flight, and high altitude flight on the structural fatigue performance of fighters, based on the characteristics of fighter flight load. Secondly, a calendar life analysis model for the fighter structure is established based on the DFR method for durability design of fighter structures under corrosive conditions and the fatigue damage accumulation theory, and the influencing factors of the calendar life are analyzed from the perspective of service environment, aircraft type, material and structure. Thirdly, the calendar life design method for critical fatigue fighter parts is established based on this model. Finally, the feasibility, universality and superiority of this method are illustrated by comparing with the traditional calendar life evaluation technology and an example of the calendar life design of the 2nd wall on the outer wing of a certain fighter.
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