Effects of mixed-mode overloading on the mixed-mode I+II fatigue crack growth

被引：0
|
作者：
Rahman Seifi
Mohammad Eshraghi
机构：
[1] Bu-Ali Sina University,Engineering Faculty
[2] Islamic Azad University,undefined
来源：
Archive of Applied Mechanics | 2013年 / 83卷
关键词：
Overloading; Mixed-mode I+II; Crack growth; Fatigue life; Residual stress;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the finite element modeling of the compact tension shear specimens has been used to evaluate the effects of overloading on fatigue crack growth with mixed-mode loading I+II. Element creation and modeling is done by CASCA software. FRANC2D was used for stress analysis and the determination of crack parameters. Life estimation of samples was done by using the software ETBX. To create the mixed-mode I+II, different loading angles of 0, 15, 45 and 75 degrees (with respect to normal direction to the crack surface) were used with various overloading ratios. The effects of residual stresses due to overloading with saving and restoring capabilities were considered as a separate loading. To confirm the modeling results, models were built with ABAQUS and also compared with the results of numerical and experimental data in the literature. There are good agreements in determining the path of the crack growth and life estimation. The effects of the loading direction, overloading ratio and its load ratio, combination of overloadings and their locations on the fatigue crack growth and life are investigated.
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页码：987 / 1000
页数：13
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