Fatigue Analysis of Nuclear Welded Structures Based on Structural Stress and Elasto-Plastic Fracture Mechanics Approach

Jong Sung Kim; Tae Eun Jin

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Fatigue Analysis of Nuclear Welded Structures Based on Structural Stress and Elasto-Plastic Fracture Mechanics Approach

机译：Fatigue Analysis of Nuclear Welded Structures Based on Structural Stress and Elasto-Plastic Fracture Mechanics Approach

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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.

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来源
《Key engineering materials》 |2005年第2期|774-780|共7页
作者
Jong Sung Kim; Tae Eun Jin;
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作者单位

Korea Power Engineering Company, 360-9 Mabuk, Guseong, Yongin, Gyeonggi, Korea;

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原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
fatigue; nuclear welded structure; structural stress; elasto-plastic fracture mechanics;

Fatigue Analysis of Nuclear Welded Structures Based on Structural Stress and Elasto-Plastic Fracture Mechanics Approach

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