Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Analytical Methodology Obtaining an Optimal Welding Sequence for Least Distortion of Welded Structure

용접구조물의 변형 최소화를 위한 최적 용접순서의 해석적 방법

  • Ha, Yunsok (Welding Research, Samsung Heavy Industries Co., LTD.)
  • 하윤석 (삼성중공업 산업기술연구소 용접연구파트)
  • Received : 2013.05.08
  • Accepted : 2013.06.24
  • Published : 2013.06.30
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Abstract

Several methodologies analyzing welding distortions of large shell structures like ship blocks have been developed and utilized in shipyards for a long times ago. In general, one of objects of thermal distortion analysis is to find welding sequence making least-deformation without any suppliance, and it can be solved easily and rapidly by EP strain-boundary method. But after assembly construction, there are usually more than 10 weldments in each process, and the number of sequence will follow the Factorial calculation. In this research, a method has been suggested to decide the best welding sequence by minimum analysis. Using this method, welding deformation could be reduced just analyzing some cases as many as the number of weldments. Experiments and Analysis of all cases were also done, and their best results are good agreements with predictation by suggested methodology.

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References

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