Effect of defect size and shape on the high-cycle fatigue behavior

被引：33
|
作者：
Guerchais, R. [1 ]
Morel, F. [1 ]
Saintier, N. [2 ]
机构：
[1] Arts & Metiers ParisTech, LAMPA, 2 Bd Ronceray, F-49035 Angers, France
[2] Univ Bordeaux 1, Arts & Metiers ParisTech, Esplanade Arts & Metiers, UMR CNRS 5295,I2M, F-33405 Talence, France
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2017年 / 100卷
关键词：
High-cycle fatigue; Elliptical notch; Crystal plasticity; Micromechanics; Fatigue criteria; STRENGTH; LIMIT; METALS;
D O I：
10.1016/j.ijfatigue.2016.12.010
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This study aims to examine the effects of both material microstructure and voids on the high-cycle fatigue behavior of metals. To deal with this matter, finite element analyses of polycrystalline aggregates are carried out, for different configurations of crystalline orientations, in order to estimate the niechanical state, at the grain scale, in the vicinity of a small elliptical hole. Fatigue criteria are then applied to estimate the average fatigue limit in fully reversed tension, for different defect sizes and ellipse aspect ratios. The constitutive models and the fatigue criteria are calibrated using experimental data obtained from specimens made of 316L austenitic steel. The estimations are then compared with the experimental trends. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：530 / 539
页数：10
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