论疲劳缺口减缩系数<I>K</I><SUB>f</SUB>

姚卫星, 顾怡. 论疲劳缺口减缩系数K_f[J]. 工程力学, 1995, 12(3): 91-96.

引用本文:

姚卫星, 顾怡. 论疲劳缺口减缩系数K_f[J]. 工程力学, 1995, 12(3): 91-96.

Yao Weixing, Gu Yi. ON THE FATIGUE NOTCH FACTOR K_f[J]. Engineering Mechanics, 1995, 12(3): 91-96.

Citation:

Yao Weixing, Gu Yi. ON THE FATIGUE NOTCH FACTOR K_f[J]. Engineering Mechanics, 1995, 12(3): 91-96.

论疲劳缺口减缩系数K_f

摘要: 本文简要回顾了疲劳减缩系数K_f的定义和主要表达式,在此基础上本文从疲劳损伤的基本机理出发推导了定量描述K_f的基本公式,讨论了影响K_f值的主要因素,并用此理论分析了疲劳实验数值,获得了较为满意的结果。

Abstract: In this paper, the definition and some expressions of fatigue notch factor K_f are briefly reviewed. A new expression of K_f is developed based on the fatigue damage mechanism.Some experimental results are analysed using the expression developed in the paper.It is shown that the predicted results are satisfactory.

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