Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Effects of Hardening Models on Cyclic Deformation Behavior of Tensile Specimen and Nuclear Piping System

인장 시편 및 원자력 배관계의 반복 변형거동에 미치는 경화 모델의 영향

  • 전다솜 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 강주연 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 허남수 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 김종성 (세종대학교 원자력공학과) ;
  • 김윤재 (고려대학교 기계공학과)
  • Received : 2017.12.13
  • Accepted : 2017.12.27
  • Published : 2017.12.30
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Abstract

Recently there have been many concerns on structural integrity of nuclear piping under seismic loadings. In terms of failure of nuclear piping due to seismic loadings, an important failure mechanism is low cycle fatigue with large cyclic displacements. To investigate the effects of seismic loading on low cycle fatigue behavior of nuclear piping, the cyclic behavior of materials and nuclear piping needs to be accurately estimated. In this paper, the non-linear finite element (FE) analyses have been carried out to evaluate the effects of three different cyclic hardening models on cyclic behavior of materials and nuclear piping, such as isotropic hardening, kinematic hardening and combined hardening.

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References

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