Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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A Study on the Prediction of Welding Distortion and Residual Stress for Channel I Butt SA Weldment Using FE Analysis

유한요소해석을 이용한 채널 I 형 잠호 맞대기 용접부의 변형 및 잔류 응력 예측에 관한 연구

  • Shin, Dae-Hee (Hull Design Department, Hyundai Heavy Industries, Co., Ltd.) ;
  • Shin, Sang-Beom (Industrial Research Institute, Hyundai Heavy Industries, Co., Ltd.) ;
  • Lee, Joo-Sung (School of Naval Architecture and Ocean Engineering, University of Ulsan)
  • 신대희 (현대중공업 선체설계부) ;
  • 신상범 (현대중공업 산업기술연구소) ;
  • 이주성 (울산대학교 조선해양공학부)
  • Published : 2007.12.20
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Abstract

The purpose of this study is to establish the predictive method of welding distortion and residual stress for the channel I butt SA (submerged arc) weldment using FEA. In order to do it, the heat input model for the weldment was defined as the combined heat source with the surface heat flux of gaussian distribution and volumetric heat source uniformly distributed within weld groove by comparing the shapes of molten pool and temperature distribution obtained by FEA with those of experiments. The arc efficiency of SA welding for two-dimensional FE analysis was evaluated as 0.85. The welding distortion and residual stress of the weldment obtained by FEA and heat input model proposed have a good agreement with those obtained by experiment. Based on the results, it was suggested that the proper heat input model should be required to evaluate the welding distortion for weldment.

Keywords

References

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