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

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Sensitivity Analysis of Heat Source Parameter for Predicting Residual Stress Induced by Electron Beam Welding

스테인리스강에 대한 전자빔 용접 잔류응력 예측을 위한 열원 변수 민감도 해석

  • 박신제 (고려대학교 기계공학부) ;
  • 김훈태 (한국수력원자력 중앙연구원) ;
  • 김윤재 (고려대학교 기계공학부)
  • Received : 2022.11.19
  • Accepted : 2022.12.22
  • Published : 2022.12.30
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Abstract

Accurate evaluation of residual stress is important for stress corrosion cracking assessment. In this paper, electron beam welding experiment is simulated via finite element analysis and the sensitivity of the parameters related to the combined heat source model is investigated. Predicted residual stresses arecompared with measured residual stresses. It is found that the welding efficiency affects the size of the tensile residual stress area and the magnitude of maximum longitudinal residual stress. It is also found that the parameter related to the ratio of energy distributed to the two-dimensional heat source has little effect on the size of tthe tensile residual stress area, but affects the size of the longitudinal residual stress in the center of the weld.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2019M2D2A2048296).

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