Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Welding Distortion Characteristics of Door Openings According to Changing Shape of Stiffener

Door Opening부의 보강재 형상변화에 따른 용접 변형 특성

  • Lee, Dong-Hun (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Seo, Jung-Kwan (The Korea Ship and Offshore Research Institute, Pusan National University) ;
  • Yi, Myung-Su (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Hyun, Chung-Min (Ship and Offshore Research Institute, Samsung Heavy Industry Co. Ltd.)
  • 이동훈 (부산대학교 조선해양공학과) ;
  • 서정관 (부산대학교 선박해양플랜트기술연구원) ;
  • 이명수 (부산대학교 조선해양공학과) ;
  • 현충민 (삼성중공업 조선해양연구소)
  • Received : 2019.01.29
  • Accepted : 2019.04.11
  • Published : 2019.04.30
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Abstract

Welding often results in welding distortion during the assembly process. The welding distortion of thin-plate structures such as the living quarters of ships and offshore installations is a more significant problem than in the case of thick-plate structures. Pre-stressing/heating and fairing, which are additional works to mitigate and control welding distortion, are inevitable, and the construction planning is accordingly delayed. In order to prevent welding distortion and minimize the additional work during the assembly process, increasing the plate thickness and/or the number of stiffeners may be a simple solution, but it may give rise to problems related to cost and weight. In this study, the welding distortion control effect of the type of stiffeners on the door openings of various living quarter structures was investigated using an experimental method and a finite element method. The results showed the feasibility of mitigating and controlling the welding distortion, and the optimum selection of the type of stiffeners was confirmed.

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References

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