航空学报 > 1995, Vol. 16 Issue (2): 85-90

基于概率疲劳的结构耐久性分析方法研究

董登科, 薛景川, 杨玉恭   

  1. 飞机结构强度研究所, 西安, 710061
  • 收稿日期:1994-06-03 修回日期:1994-08-06 出版日期:1995-04-25 发布日期:1995-04-25

THE RESEARCH OF STRUCTURAL DURABILITY ANALYSIS MTHOD BASED ON PROBABILISTIC FATIGUE

Dong Dengke, Sue Jingchuan, Yang Yugong   

  1. Aircraft Structure Strength Research Institute, Xi'an, 710061
  • Received:1994-06-03 Revised:1994-08-06 Online:1995-04-25 Published:1995-04-25

摘要: 从概率疲劳和概率断裂力学角度出发,以结构细节疲劳特征强度为基础表示结构的疲劳特性,给出了结构细节疲劳特征强度随裂纹长度变化的数学表达式,对整个SN曲线的特征作了更深入的探讨,为基于概率疲劳角度进行耐久性分析奠定了基础。

关键词: 概率, 耐久性, 疲劳

Abstract: A durability analysis method from probabilistic fatigue and probabilistic fracture mechanics is described,in wich the fatigue characteristic is expressed with structural Detail Fatigue Rating Strength(DFRS).The relationship between DFRS and Crack size a is given,and a deeper research is done on full S-N curves feature.

Key words: probability, durability, fatiue

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