Short fatigue crack growth under multiaxial nonproportional loading

被引：0
|
作者：
Hoffmeyer, J
Döring, R
Vormwald, M
机构：
[1] Tech Univ Darmstadt, Fachgebiet Werkstoffmech, D-64287 Darmstadt, Germany
[2] Bauhaus Univ Weimar, Inst Strukt Mech, D-99421 Weimar, Germany
来源：
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2001年 / 32卷 / 04期
关键词：
D O I：
10.1002/1521-4052(200104)32:4<329::AID-MAWE329>3.0.CO;2-O
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Initiation and short fatigue crack growth have been investigated under nonproportional cyclic loading. A critical plane approach based on fracture mechanics is used for modelling the fatigue process. A Paris-type crack growth law, formulated using the effective cyclic J-integral as crack driving force parameter, is integrated to give crack growth curves. Crack opening stresses and strains are calculated with approximation equations. Jiang's plasticity model is used to predict the stress-strain path. The good agreement between model and real damage evolution is shown comparing experimentally determined crack growth curves, crack orientations, and life curves.
引用
收藏
页码：329 / 336
页数：8
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