Fatigue analysis of nuclear welded structures based on structural stress and elasto-plastic fracture mechanics approach

被引：0
|
作者：
Kim, JS [1 ]
Jin, TE [1 ]
机构：
[1] Korea Power Engn Co, Yongin, Gyeonggi, South Korea
来源：
ADVANCES IN FRACTURE AND STRENGTH, PTS 1- 4 | 2005年 / 297-300卷
关键词：
fatigue; nuclear welded structure; structural stress; elasto-plastic fracture mechanics;
D O I：
10.4028/www.scientific.net/KEM.297-300.774
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the paper, the validity of the modified mesh-insensitive SS (structural stress) procedure to apply to the welded joints with local thickness variation is identified via the comparison of SCFs (stress concentration factors) calculated for various FE (finite element) models. FCI (fatigue crack initiation) cycles are determined by using the SS/EPFM (elasto-plastic fracture mechanics) approach and the various fatigue crack growth models. Fatigue test is performed to identify the validity of the fatigue analysis results. Finally, as a result of comparison among test and various analysis results, it is found that the SS/FM (fracture mechanics) approach agrees well with the fatigue test results over all cycle regions and the SS/EPFM approach is more reliable than the SS/LEFM (linear elastic fracture mechanics) approach.
引用
收藏
页码：774 / 780
页数：7
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