Engineering Approach Based on Reference Stress Concept for Calculating J and Crack Opening Displacement of Complex-Cracked Pipes
- Authors
- Jeong, Jae-Uk; Choi, Jae-Boong; Huh, Nam-Su; Shim, Do-Jun; Kim, Yun-Jae
- Issue Date
- 6월-2017
- Publisher
- ASME
- Keywords
- complex crack; crack opening displacement; finite-element analysis; enhanced reference stress method; J-integral
- Citation
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, v.139, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
- Volume
- 139
- Number
- 3
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/83229
- DOI
- 10.1115/1.4035082
- ISSN
- 0094-9930
- Abstract
- In this study, an engineering approach for estimations of fracture mechanics parameters, i.e., J-integral and crack opening displacement (COD), for complex-cracked pipes was suggested based on reference stress concept, where stress-strain data of the material was used to assess structural integrity of complex-cracked pipes. In the present study, new reference loads that can reduce the dependency on strain hardening of the material have been suggested for complex-cracked pipes under each loading mode. By using the proposed optimized reference load for complex-cracked pipes, J-integral and COD estimation procedures have been proposed based on the reference stress concept together with the elastic solutions for complex-cracked pipes. The predicted J-integrals and CODs based on the proposed method have been validated against published experimental data and FE results using actual stress-strain data. Moreover, the predictions using the proposed methods are also compared with those using the existing solutions for simple through-wall cracks (TWCs) based on reduced thickness analogy concept.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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