Correlation of crack growth rate and stress ratio for fatigue damage containing very high cycle fatigue regime

被引：4
|
作者：
Sun, Chengqi [1 ]
Hong, Youshi [1 ]
机构：
[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
来源：
THEORETICAL AND APPLIED MECHANICS LETTERS | 2012年 / 2卷 / 03期
基金：
中国国家自然科学基金;
关键词：
very high cycle fatigue; crack growth rate; stress ratio; fatigue strength;
D O I：
10.1063/2.1203104
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A model is proposed to correlate the crack growth rate and stress ratio containing very high cycle fatigue regime. The model is verified by the experimental data in literature. Then a formula is derived for the effect of mean stress on fatigue strength, and it is used to estimate the fatigue strength of a bearing steel in very high cycle fatigue regime at different stress ratios. The estimated results are also compared with those by Goodman formula. (C) 2012 The Chinese Society of Theoretical and Applied Mechanics.
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页数：4
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