Fatigue scattering factor for load spectra in a fighter fleet

被引：0
|
作者：
Li T. [1 ]
He X.-F. [1 ]
Sui F.-Y. [2 ]
Li Y.-H. [1 ,3 ]
机构：
[1] School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing
[2] School of Automation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing
[3] Aviation Industry Corporation of China, Beijing
来源：
He, Xiao-Fan (xfhe@buaa.edu.cn) | 1600年 / Tsinghua University卷 / 34期
关键词：
Damage; Distribution; Fighter aircraft; Load spectrum; Scatter factor;
D O I：
10.6052/j.issn.1000-4750.2015.11.0880
中图分类号：
学科分类号：
摘要：
In the design phase of an aircraft structure, the dispersion of structural and load spectra must be taken into account to evaluate the safe-life of a fleet. Thus it is critical to determine the load spectrum scatter factor. The distributions of 73 F/A-18C aircrafts' design lives and 74 F/A-18 aircrafts' damage rates are analyzed, and the results show that the load spectrum damage of the fighter aircraft follows lognormal distribution. The definition of load spectrum scatter factor and two methods to estimate the load spectrum scatter factor are proposed. The formula for calculating load spectrum scatter factor is presented and the calculated values are compared with empirical values. © 2017, Engineering Mechanics Press. All right reserved.
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页码：241 / 247
页数：6
相关论文
共 29 条
  • [1] GJB 67.6A-2008, Military airplane structural strength specification Part 6: Repeated loads, durability and damage tolerance, (2008)
  • [2] Stapelberg R.F., Handbook of Reliability, Availability, Maintainability and Safety in Engineering Design, pp. 43-45, (2009)
  • [3] Liu W., Structural Reliability Design Manual, pp. 1249-1280, (2008)
  • [4] Freudenthal A.M., The scatter factor in the reliability assessment of aircraft structures, Journal of Aircraft, 14, 2, pp. 202-208, (1977)
  • [5] Zhang F., The categories and values of fatigue scatter factors, Chinese Journal of Aeronautics, 8, 6, pp. 239-243, (1987)
  • [6] Hoffman M.E., Hoffman P.C., Corrosion and fatigue research-structural issues and relevance to naval aviation, International Journal of Fatigue, 23, pp. 1-10, (2001)
  • [7] Tovo R., On the fatigue reliability evaluation of structural components under service loading, International Journal of Fatigue, 23, 7, pp. 587-598, (2001)
  • [8] Svensson T., Prediction uncertainties at variable amplitude fatigue, International Journal of Fatigue, 17, pp. 295-302, (1997)
  • [9] Locke J.E., Smith H.W., Gabriel E.A., Et al., General aviation aircraft-normal acceleration data analysis and collection project, pp. 1-3, (1993)
  • [10] Li T., He X., Liu W., Calculation and analysis of the scatter of load spectrum damage based on Fokker F27 airplanes, Journal of Beijing University of Aeronautics and Astronautics, 41, 3, pp. 551-558, (2015)
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