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

  • 제48권3호
  • /
  • Pages.238-245
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  • 2011
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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반복 하중을 받는 용접 구조물의 잔류 응력 저감 파악을 위한 유한요소 해석 및 실험적 연구

Experiments and Finite Element Analysis for the Estimation of Stress Relief in Welded Structures

  • 양용식 (인하대학교 조선해양공학과) ;
  • 강중규 (대우조선해양 구조R&D) ;
  • 이장현 (인하대학교 조선해양공학과) ;
  • 김성찬 (인하공업전문대학 선박해양시스템과) ;
  • 황세윤 (인하대학교 조선해양공학과)
  • 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)
  • 투고 : 2010.08.26
  • 심사 : 2011.03.30
  • 발행 : 2011.06.20
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초록

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.

키워드

참고문헌

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