The effect of complex crack shape on crack driving forces and crack tip stress fields: Experiment and FE analysis

被引：4

作者：

Kim, Seung-Jae ^{[1
]}

Bae, Kyung-Dong ^{[1
]}

Kim, Yun-Jae ^{[1
]}

Ryu, Ho-Wan ^{[2
]}

Kim, Jin-Weon ^{[3
]}

Oh, Young-Jin ^{[4
]}

机构：

[1] Korea Univ, Dept Mech Engn, Seoul 02841, South Korea

[2] Korea Inst Nucl Safety, Div Regulatory Inspect, Daejeon 34142, South Korea

[3] Chosun Univ, Dept Nucl Engn, Gwangju 61452, South Korea

[4] KEPCO Engn & Construct Co Inc, Power Engn Res Inst, Gimcheon Si 39660, South Korea

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2020年 / 185卷

关键词：

Complex cracked tension specimen testing; Complex crack shape; Crack tip stress field; Finite element analysis; Fracture mechanics parameters;

D O I：

10.1016/j.ijpvp.2020.104135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.

引用

页数：12

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