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http://dx.doi.org/10.3795/KSME-A.2014.38.7.727

Finite Element Based Multi-Scale Ductile Failure Simulation of Full-Scale Pipes with a Circumferential Crack in a Low Carbon Steel  

Han, Jae-Jun (Dept. of Mechanical Engineering, Korea Univ.)
Bae, Kyung-Dong (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yun-Jae (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Jong-Hyun (Structural Integrity and Materials Dept., KEPCO E&C)
Kim, Nak-Hyun (Fast Reactor Design Division, KAERI)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.7, 2014 , pp. 727-734 More about this Journal
Abstract
This paper describes multi-scale based ductile fracture simulation using finite element (FE) damage analysis. The maximum and crack initiation loads of cracked components were predicted using proposed virtual testing method. To apply the local approach criteria for ductile fracture, stress-modified fracture strain model was adopted as the damage criteria with modified calibration technique that only requires tensile and fracture toughness test data. Element-size-dependent critical damage model is also introduced to apply the proposed ductile fracture simulation to large-scale components. The results of the simulation were compared with those of the tests on SA333 Gr. 6 full-scale pipes at $288^{\circ}C$, performed by the Battelle Memorial Institute.
Keywords
Ductile Fracture; Full-scale Pipes; Virtual Testing Method; Finite Element Analysis; Damage Simulation; Element-size-dependent Critical Damage Model;
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