Numerical prediction of crack front shape during fatigue propagation considering plasticity-induced crack closure

被引：28
|
作者：
Gardin, Catherine [1 ]
Fiordalisi, Saverio [1 ]
Sarrazin-Baudoux, Christine [1 ]
Gueguen, Mikael [1 ]
Petit, Jean [1 ]
机构：
[1] Univ Poitiers, ENSMA, Inst Pprime, CNRS ENSMA UPR 3346, Teleport 2,1 Ave Clement Ader,BP 40109, F-86961 Futuroscope, France
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2016年 / 88卷
关键词：
3D finite element modeling; Plasticity-induced crack closure; Effective stress intensity factor range; Crack front shape; Stainless steel; EQUIVALENT THICKNESS CONCEPTION; PLANE-STRAIN CONDITIONS; FINITE-ELEMENT; ROUND BARS; SURFACE CRACKS; CORNER CRACK; CT SPECIMENS; PART I; GROWTH; STRESS;
D O I：
10.1016/j.ijfatigue.2016.03.018
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper deals with the numerical study of the plasticity-induced crack closure of through-thickness plane cracks, in CT specimens made of 304L austenitic stainless steel. The initial crack front is straight. Constant amplitude of the stress intensity factor is applied in order to limit the loading history influence. Crack propagation is achieved through automatic remeshing, with elastic and plastic parallel calculations. The local effective stress intensity factor range is calculated along the crack front, and considered as the propagation driving force. A comparison with experimental crack front shape allows the validation of the employed method, although some discrepancies remain near the specimen edges. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：68 / 77
页数：10
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