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용접부 중앙에 표면균열이 존재하는 인장 평판에 대한강도 불일치 한계하중 해석 및 간략 J-적분 예측Mis-Match Limit Load Analyses and Approximate J-Integral Estimates for Similar Metal Weld with Weld-Center Crack Under Tension Load
- Other Titles
- Mis-Match Limit Load Analyses and Approximate J-Integral Estimates for Similar Metal Weld with Weld-Center Crack Under Tension Load
- Issue Date
- 2008
- Publisher
- 대한기계학회
- Keywords
- Finite Element Analysis(유한요소해석); Strength-Mismatch(강도불일치); Limit Load Analysis(한계하중해석); J-Integral(J-적분)
- Citation
- 대한기계학회논문집 A, v.32, no.5, pp.411 - 418
- Indexed
- SCOPUS
KCI
- Journal Title
- 대한기계학회논문집 A
- Volume
- 32
- Number
- 5
- Start Page
- 411
- End Page
- 418
- ISSN
- 1226-4873
- Abstract
- In this work, the effect of strength mismatch on plastic limit loads is quantified for similar metal weld plates with cracks under tension load, via three-dimensional, small strain elastic-perfectly plastic finite element analyses. Relevant variables related to plate geometry and crack length are systematically varied, in addition to the weld width. An important finding is that mis-match limit loads can be uniquely quantified through strength mis-match ratio and one geometry-related parameter. Based on the proposed limit load solutions, reference stress based J-integral estimates is also investigated. When the reference stress is defined by the mis-match limit load, predicted J-integral values agree overall well with FE results
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