Influence of the loading path on fatigue crack growth under mixed-mode loading

被引:24
|
作者
Doquet, V. [1 ]
Abbadi, M. [1 ]
Bui, Q. H. [1 ]
Pons, A. [1 ]
机构
[1] Ecole Polytech, CNRS, Mecan Solides Lab, F-91128 Palaiseau, France
关键词
Mixed-mode; Non-proportional loading; Fatigue crack; Bifurcation; STEEL; PROPAGATION; PLASTICITY; BEHAVIOR; CONTACT; SHEAR;
D O I
10.1007/s10704-009-9396-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Fatigue crack growth tests were performed under various mixed-mode loading paths, on maraging steel. The effective loading paths were computed by finite element simulations, in which asperity-induced crack closure and friction were modelled. Application of fatigue criteria for tension or shear-dominated failure after elastic-plastic computations of stresses and strains, ahead of the crack tip, yielded predictions of the crack paths, assuming that the crack would propagate in the direction which maximises its growth rate. This approach appears successful in most cases considered herein.
引用
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页码:219 / 232
页数:14
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