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

The Society of Naval Architects of Korea (대한조선학회)
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Experiments and Finite Element Analysis for the Estimation of Stress Relief in Welded Structures

반복 하중을 받는 용접 구조물의 잔류 응력 저감 파악을 위한 유한요소 해석 및 실험적 연구

  • Yang, Yong-Sic (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kang, Joong-Kyoo (Daewoo Shipbuilding & Marine Engineering Co., Ltd., Ship and Marine Structure R&D Team) ;
  • Lee, Jang-Hyun (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Sung-Chan (Department of Ship Structure and Ocean System, Inha Technical College) ;
  • Hwang, Se-Yum (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 양용식 (인하대학교 조선해양공학과) ;
  • 강중규 (대우조선해양 구조R&D) ;
  • 이장현 (인하대학교 조선해양공학과) ;
  • 김성찬 (인하공업전문대학 선박해양시스템과) ;
  • 황세윤 (인하대학교 조선해양공학과)
  • Received : 2010.08.26
  • Accepted : 2011.03.30
  • Published : 2011.06.20
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Abstract

Welding inevitably introduces the residual stresses which affect the fatigue strength of the joint structure. The mitigation of fatigue strength depends on the residual stress magnitude and distribution. Stress relief analyses are of practical interest for all cyclic loaded welded structures, such as ships and offshore structures. In order to estimate the effects of relaxation of residual stresses in the welded structure, this paper presents a finite element analysis procedure and experimental results for the welded structure. Cruciform specimens joint by MAG welding have been tested to measure the released stress. Relieved welding residual stresses obtained by finite element analysis are compared with those measured by experiment.

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References

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