Evaluation of mixed-mode crack growth direction criteria under rolling contact conditions

被引：9
|
作者：
Floros, Dimosthenis [1 ]
Ekberg, Anders [2 ]
Larsson, Fredrik [1 ]
机构：
[1] Chalmers Univ Technol, CHARMEC Dept Ind & Mat Sci, S-41296 Gothenburg, Sweden
[2] Chalmers Univ Technol, CHARMEC Dept Mech & Maritime Sci, S-41296 Gothenburg, Sweden
来源：
WEAR | 2020年 / 448卷 / 448-449期
基金：
欧盟地平线“2020”;
关键词：
Finite element modeling; Rolling contact fatigue; Fracture mechanics; Shear-mode crack growth; Crack-face friction; FATIGUE;
D O I：
10.1016/j.wear.2020.203184
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fatigue crack growth direction criteria are evaluated towards a twin-disc experiment from the literature. The experiment is modelled numerically at different crack lengths accounting for the effect of crack-face friction. Based on numerically evaluated stresses, strains and displacements, a range of crack growth direction criteria from the literature are evaluated and compared to the experimentally found crack growth directions. In the considered experiment, the growth is found to be essentially shear driven. Of the evaluated criteria employed to linear elastic plane strain analyses, the Maximum Shear Stress Range (MSSR) and Vector Crack-Tip Displacement (VCTD) criteria are found to be able to capture the experimentally obtained crack growth direction throughout the fatigue life. Crack-face friction was found to impose a small effect on directions predicted by these criteria.
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收藏
页数：10
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