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力学与实践 ›› 1999, Vol. 21 ›› Issue (2): 25-26.doi: 10.6052/1000-0879-1999-058

• 应用研究 • 上一篇    下一篇

应力场强(SFI)法下的疲劳缺口系数K_f的计算

杨晓华1 陈跃良   

  1. 山东青岛海军航空工程学院青岛分院飞机教研室 266041 山东青岛海军航空工程学院青岛分院飞机教研室 266041
  • 收稿日期:2006-07-18 修回日期:1900-01-01 出版日期:1999-04-10 发布日期:1999-04-10

THE COMPUTATION OF FATIGUE NOTCH FACTOR (K_f) BASED ON STRESS FIELD INTENSITY (SFI)

  • Received:2006-07-18 Revised:1900-01-01 Online:1999-04-10 Published:1999-04-10

摘要: 着重研究场强法理论下疲劳缺口系数Kf的计算.结果表明应力场强法理论下的疲劳缺口系数Kf与试验结果符合得较好,用应力场强法理论计算得到的等幅和变辐载荷的寿命与试验寿命也符合得较好.

关键词: 应力集中, 疲劳缺口系数, 应力场强法

Abstract: This paper studies the computation of fatigue notch factor (Kf) based on Stress Field Intensity (SFI). The results show that fatigue life under constant and variable amplitude load based on SFI agrees very well with experimental results.

Key words: stress concentration, fatigue notch factor, stress field intensity