DOI QR코드

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고유변형도 기반 열변형부의 후속 하중에 기인한 용접 후 변형 해석

Analysis of Post Weld Deformation at HAZ by External Forces Based on Inherent Strain

  • 김종태 (서울대학교 조선해양공학과) ;
  • 하윤석 (서울대학교 조선해양공학과) ;
  • 장창두 (서울대학교 조선해양공학과)
  • Kim, Jong-Tae (Department of Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Ha, Yun-Sok (Department of Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Jang, Chang-Doo (Department of Naval Architecture & Ocean Engineering, Seoul National University)
  • 발행 : 2006.04.01

초록

In case of welding, the inherent strains are generated, because a structure experiences the plastic yielding. The inherent strain is defined as the irrecoverable strain after removing structural restraints and loading. For the analysis method of welding distortion, equivalent loading method based on inherent strain is in general use due to its efficiency and effectiveness. However, it is generally difficult to know the final strain of the welded structure if additional loadings were applied after welding. for this reason, this study introduced the concept of the hardening and added the hardening term to the equivalent loading method based on inherent strain. Therefore, the purposes of this study are to develop the inherent strain formula considering the hardening effect and to calculate residual Stresses Using Proposed inherent Strain. Also, this Study Verified the availability Of proposed inherent strain method by loading-unloading experiment on welded plate.

키워드

참고문헌

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  2. 장창두, 서승일, 고대은, 1997, '간이 열탄소성 해석을 이용한 선상가열에 의한 판의 변형 예측을 위한 연구,' 대한조선학회 논문집, 제 34권, 제 3 호, pp. 104-112
  3. 장창두, 이창현, 2000, '선체 블록의 용접변형 예측 및 제어를 위한 연구.' 대한조선학회 논문집, 제 37권, 제 2호, pp. 127-136
  4. 장창두, 하윤석, 고대은, 문성춘, 2002, '선상가열 판변형 해석을 위한 고유변형도 영역의 결정법' 대한조선학회 논문집, 제 39권, 제 1호, pp. 82-89 https://doi.org/10.3744/SNAK.2002.39.1.082
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피인용 문헌

  1. Development of Thermal Distortion Analysis Method on Large Shell Structure Using Inherent Strain as Boundary Condition vol.45, pp.1, 2008, https://doi.org/10.3744/SNAK.2008.45.1.93
  2. Overview of Research Works Regarding Welding Distortion vol.30, pp.2, 2012, https://doi.org/10.5781/KWJS.2012.30.2.141
  3. Trends of Welding Deformation Analysis for Ship Structure vol.30, pp.2, 2012, https://doi.org/10.5781/KWJS.2012.30.2.147