Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Fracture Simulation of Low-Temperature High-Strength Steel (EH36) using User-Subroutine of Commercial Finite Element Code

상용 유한요소코드 사용자-서브루틴을 이용한 저온용 고장력강 (EH36)의 파단 시뮬레이션

  • Choung, Joonmo (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Nam, Woongshik (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Younghun (Department of Naval Architecture, Ocean and IT Engineering, Kyungnam University)
  • 정준모 (인하대학교 조선해양공학과) ;
  • 남웅식 (인하대학교 조선해양공학과) ;
  • 김영훈 (경남대학교 조선해양IT공학과)
  • Received : 2013.09.13
  • Accepted : 2014.02.13
  • Published : 2014.02.28
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Abstract

This paper discusses a new formulation for the failure strain in the average stress triaxiaility domain for a low-temperature high-strength steel (EH36). The new formula available at a low average stress triaxiality zone is proposed based on the comparison of two results from tensile tests of flat type specimens and their numerical simulations. In order to confirm the validity of the failure strain formulation, a user-subroutine was developed using Abaqus/Explicit, which is known to be one of the most popular commercial finite element analysis codes. Numerical fracture simulations with the user-subroutine were conducted for all the tensile tests. A comparison of the engineering stress-strain curves and engineering failure strain obtained from the numerical simulation with the user-subroutine for the tensile tests revealed that the newly developed user-subroutine effectively predicts the initiation of failure.

Keywords

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