飞机机身铆接搭接接头的微动疲劳

IF 2.1 3区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of Aircraft Pub Date : 2023-09-18 DOI:10.2514/1.c037475

Huayang Zhang, Jinxiang Liu, Xin Liu

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引用次数: 0

摘要

由微动疲劳引起的搭接铆接失效是造成飞机飞行中大量结构故障的主要原因。本文采用扩展有限元分析和实验数据相结合的方法，研究了微动裂纹的形成和扩展，以及铆钉挤压力和施加的疲劳应力对微动裂纹的影响。结果表明，随着铆钉挤压力的增大，微动裂纹和平面疲劳裂纹扩展寿命增大。然而，外加疲劳应力的增加降低了微动和平原疲劳裂纹扩展寿命。此外，增加铆钉挤压力或施加疲劳应力会降低微动与总疲劳裂纹扩展寿命之比。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Fretting Fatigue of Riveted Lap Joints in Aircraft Fuselage

Failure of riveted lap joints originating from fretting fatigue has been responsible for a number of structural failures of aircraft in midflight. Using a combination of extended finite element method analysis and experimental data, this paper investigates the formation and propagation of cracks initiated by fretting, and how it is influenced by rivet squeeze force and by the applied fatigue stresses. It is found that fretting and plain fatigue crack growth life increase with the increase of rivet squeeze force. However, the rise of applied fatigue stress reduces fretting and plain fatigue crack growth life. Moreover, enhancing rivet squeeze force or applied fatigue stress decreases the ratio of fretting to total fatigue crack growth life.

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来源期刊

Journal of Aircraft 工程技术-工程：宇航

CiteScore

4.50

自引率

31.80%

发文量

141

审稿时长

6 months

期刊介绍： This Journal is devoted to the advancement of the applied science and technology of airborne flight through the dissemination of original archival papers describing significant advances in aircraft, the operation of aircraft, and applications of aircraft technology to other fields. The Journal publishes qualified papers on aircraft systems, air transportation, air traffic management, and multidisciplinary design optimization of aircraft, flight mechanics, flight and ground testing, applied computational fluid dynamics, flight safety, weather and noise hazards, human factors, airport design, airline operations, application of computers to aircraft including artificial intelligence/expert systems, production methods, engineering economic analyses, affordability, reliability, maintainability, and logistics support, integration of propulsion and control systems into aircraft design and operations, aircraft aerodynamics (including unsteady aerodynamics), structural design/dynamics , aeroelasticity, and aeroacoustics. It publishes papers on general aviation, military and civilian aircraft, UAV, STOL and V/STOL, subsonic, supersonic, transonic, and hypersonic aircraft. Papers are sought which comprehensively survey results of recent technical work with emphasis on aircraft technology application.