상용 유한요소코드 사용자-서브루틴을 이용한 저온용 고장력강 (EH36)의 파단 시뮬레이션
Fracture Simulation of Low-Temperature High-Strength Steel (EH36) using User-Subroutine of Commercial Finite Element Code
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다운로드
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참고문헌
키워드
초록
This paper discusses a new formulation for the failure strain in the average stress triaxiaility domain for a low-temperaturehigh-strength steel (EH36). The new formula available at a low average stress triaxiality zone is proposed based on the comparison of two resultsfrom tensile tests of flat type specimens and their numerical simulations. In order to confirm the validity of the failure strain formulation, auser-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–straincurves and engineering failure strain obtained from the numerical simulation with the user-subroutine for the tensile tests revealed that the newlydeveloped user-subroutine effectively predicts the initiation of failure.
Abstract
This paper discusses a new formulation for the failure strain in the average stress triaxiaility domain for a low-temperaturehigh-strength steel (EH36). The new formula available at a low average stress triaxiality zone is proposed based on the comparison of two resultsfrom tensile tests of flat type specimens and their numerical simulations. In order to confirm the validity of the failure strain formulation, auser-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–straincurves and engineering failure strain obtained from the numerical simulation with the user-subroutine for the tensile tests revealed that the newlydeveloped user-subroutine effectively predicts the initiation of failure.
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