Estimation of the effects of plasticity and resulting crack closure during small fatigue crack growth

被引：15
作者：
Panasyuk, VV
Andreykiv, OY
Ritchie, RO
Darchuk, OI
机构：
[1] Karpenko Physicomech Inst, UA-290601 Lvov, Ukraine
[2] Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA
来源：
INTERNATIONAL JOURNAL OF FRACTURE | 2001年 / 107卷 / 02期
关键词：
small fatigue cracks; crack closure; plastic strip model; singular integral equation method;
D O I：
10.1023/A:1007690904863
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
On the basis of a plastic-strip model and the method of singular integral equations, a closed-form analytical solution of the problem of an elastic-plastic plate containing a rectilinear fatigue crack is considered. The solution is used for the prediction of fatigue growth of 'mechanically-small' crack by accounting for reverse plastic yielding and plasticity-induced crack closure in the material. The main effects of these factors on the crack-growth rate are analyzed, and the predicted results are compared with experimental data on small fatigue-crack growth in a aluminum-lithium alloy 2091-T351 and Fe-3% Si alloy.
引用
收藏
页码：99 / 115
页数：17
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