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基于不同寿命分布的DFR值换算关系

董彦民 贺小帆 刘文珽

董彦民, 贺小帆, 刘文珽等 . 基于不同寿命分布的DFR值换算关系[J]. 北京航空航天大学学报, 2011, 37(12): 1524-1528.
引用本文: 董彦民, 贺小帆, 刘文珽等 . 基于不同寿命分布的DFR值换算关系[J]. 北京航空航天大学学报, 2011, 37(12): 1524-1528.
Dong Yanmin, He Xiaofan, Liu Wentinget al. Conversion relation of detail fatigue rating based on different fatigue life distribution[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1524-1528. (in Chinese)
Citation: Dong Yanmin, He Xiaofan, Liu Wentinget al. Conversion relation of detail fatigue rating based on different fatigue life distribution[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1524-1528. (in Chinese)

基于不同寿命分布的DFR值换算关系

详细信息
    作者简介:

    董彦民(1982-),男,河北承德人,博士后,buaadym@yahoo.com.cn.

  • 中图分类号: V 215.5

Conversion relation of detail fatigue rating based on different fatigue life distribution

  • 摘要: 由于使用要求、载荷情况、结构型式与寿命可靠性要求等方面的显著区别,军机结构细节疲劳额定值(DFR,Detail Fatigue Rating)的定义有别于民机结构,主要体现在寿命分布假设与基本可靠性要求的不同以及基本结构的差异上.通过构件疲劳额定系数修正基本结构细节数的差别,假定采用对数正态分布与威布尔分布估计同一结构的中值寿命得到的估计值相同,从而导出了基于不同寿命分布的DFR值换算关系,给出了换算关系取决于DFR基准值与材料类别的结论.为军机结构耐久性设计提供了一种通过民机相似结构DFR值换算确定军机DFR值的方法,最后通过算例进行了验证.

     

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出版历程
  • 收稿日期:  2010-08-06
  • 刊出日期:  2012-12-30

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