EFFECT OF NON-PROPORTIONAL OVERLOADING ON FATIGUE CRACK GROWTH

被引：0
|
作者：
GAO Hua CHEN Youxuan LI Ming Shanghai University of Engineering Science
机构：
来源：
Acta Metallurgica Sinica(English Letters) | 1991年 / 01期
关键词：
non-proportional overloading; fatigue crack growth; mixed mode loading;
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学科分类号：
摘要：
The effect of proportional and non-proportional overloading on mode l fatigue crack growthhave been studied,and the influences of crack tip plastic zone,crack tip blunting as well ascrack closure were discussed.Proportional(model I)overloading may cause more seriouscrack growth retardation than non-proportional(mixed mode)overloading.Therefore,forestimating the fatigue life of engineering structures to simplify a real overload which may of-ten be non-proportional as a proportional one is not always safe.
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页码：59 / 64
页数：6
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