A multi-scale damage model for fatigue accumulation due to short cracks nucleation and growth

被引：31
|
作者：
Sun, Bin [1 ]
Li, Zhaoxia [1 ]
机构：
[1] Southeast Univ, Dept Engn Mech, Jiangsu Key Lab Engn Mech, Nanjing 210096, Jiangsu, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2014年 / 127卷
基金：
中国国家自然科学基金;
关键词：
Short crack; Fatigue damage; Multi-scale damage model; Fatigue life; NUMERICAL DENSITY; BEHAVIOR; INITIATION; EVOLUTION; PROPAGATION; MECHANICS; MICROSTRUCTURE; MICRODAMAGE; SIMULATION; CONTINUUM;
D O I：
10.1016/j.engfracmech.2014.06.014
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A multi-scale fatigue damage evolution model is proposed for describing both the behaviour of short fatigue cracks nucleation and growth in micro-scale and fatigue damage evolution reflecting the progressive deterioration process of metal components and structures in macro-scale. The model is verified through the experimental data of fatigue damage. It was found that, the model can offer a new reasonable explanation of the effect of load sequence on fatigue life, and also can predict the fatigue life during fatigue damage accumulation due to short cracks nucleation and growth in metal components and structures. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 295
页数：16
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