Browse > Article

3D Semi-elliptical Interfacial Crack Front Stress Fields in Welded Joints  

최호승 (서강대학교 기계공학과)
이형일 (서강대학교 기계공학과)
송원근 (시설안전기술공단 기술개발지원실)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.15, no.4, 2002 , pp. 649-659 More about this Journal
Abstract
For a variety of elastic-plastic stress fields of plane strain specimens, many research works verified the validity of J-T approach. To generalize the validity of J-T method, however, further investigations are needed for more practical 3D structures than the idealized geometries as plane strain specimens. In this work, selecting two main types of structures such as plate and straight pipe, we perform 3D finite element(FE) modeling, and accompanying elastic, elastic-plastic FE analyses. We then study the validity of J-T application to 3D structures, and present some useful informations for the design or assessment of pipe welds by comparing the stress fields from the detailed 3D FE analyses to those predicted with J-T two parameters.
Keywords
semi-elliptical interfacial crack; finite element analysis; J-integral; T-stress; plate; straight pipe;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Betegon, C. and Hancock, J. W., 'Two-parameter Characterization of Elasticplastic Crack Tip Fields,' Journal of Applied Mechanics, Vol. 58, 1991, pp.104-110   DOI
2 Wang, Y. Y., A 'Two-parameter Characterization of Elasticplastic Crack Tip Fields and Applications to Cleavage Fracture,' Ph. D. Dissertation, Massachusetts Institute of Technology, 1991, Chapters 1-4
3 김윤재, 이형일, 'On the Constraint of Elasticplastic Interfacial Cracks in Bimaterials,' 대한기계학회 재료 및 파괴부문 학술대회논문집(2월), 1996, pp.41-46
4 이형일, 최호승, 'J-T에 의한 3차원 반타원 계면균열선단 응력장의 기술,'대한기계학회논문집(A), 제26권, 제7호, 2002, 게재 예정
5 ABAQUS User's Manual, Version 5. 8, Hibbitt, Karlsson and Sorensen, Inc., Pawtucket, RI, 1998
6 이형일, 서헌, '용접부 3차원 표면균열선단에서의 구속상태,' 대한기계학회논문집 (A), 제24권, 제1호, 2000, pp.144-155
7 Nakamura, T. and Parks, D. M., 'Three-dimensional Stress Field Near the Crack Front of a Thin Elastic Plate,' Journal of Applied Mechanics, Vol. 55, 1992, pp.805-813   DOI
8 Shih, C. F., Moran, B. and Nakamura, T., Energy Release Rate along a Three-dimensional Crack Front in a Thermo-mechanical Field, International Journal of Fracture, Vol. 30, 1986, pp.79-102
9 Lee, H. and Parks, D. M., Enhanced Elasticplastic Linespring Finite Element,' International Journal of Solids and Structures, Vol. 32, 1995, pp.2393-2418   DOI   ScienceOn
10 이형일, 함종호, 김윤재, '수정된 경계층법에 의한 변형경화 이종접합재의 계면균열선단 구속상태 및 J-적분 고찰,'대한기계학회논문집(A), 제23권, 제9호, 1999, pp.1525-1535