Journal
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
Volume 39, Issue 11, Pages 1391-1406Publisher
WILEY
DOI: 10.1111/ffe.12456
Keywords
circumferential cracked pipe test simulation; finite element damage analysis; stress-modified fracture strain
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2013M2A8A1040924, NRF-2007-0056094]
- Energy Efficiency and Resources Core Technology Program
- Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20131520202170, 20141520100860]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20141520100860, 20131520202170] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this paper, numerical ductile tearing simulation results are compared with six circumferential through-wall and surface cracked pipes made of two materials (SA-333 Gr. 6 and A106 Gr. B carbon steels), performed at Battelle. For simulation, a model using a simplified fracture strain model is employed, by analysing tensile data of the material. By comparing experimental J-R data with FE simulation results, the damage model dependent on the element size is determined based on the ductility exhaustion concept. The model is used to simulate ductile tearing behaviour of six circumferential through-wall and surface cracked pipes. In all cases, simulated results agree well with experimental load, crack length and crack mouth opening displacement versus load line displacement data.
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