Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Analysis of the Mechanism of Longitudinal Bending Deformation Due to Welding in a Steel Plate by Using a Numerical Model

수치해석모델을 이용한 강판재의 종굽힘 용접변형 생성기구의 해석

  • 김용래 (영남대학교 공과대학 기계공학부) ;
  • 엄괄신 (영남대학교 공과대학 기계공학부) ;
  • 송규영 (경북하이브리드부품연구원) ;
  • 김재웅 (영남대학교 공과대학 기계공학부)
  • Received : 2016.09.09
  • Accepted : 2016.10.12
  • Published : 2017.01.01
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Abstract

Welding deformation is a permanent deformation that is caused in structures by welding heat. Welding distortion is the primary cause of reduced productivity, due to welded structural strength degradation, low dimensional accuracy, and appearance. As a result, research and numerous experiments are being carried out to control welding deformation. The aim of this study is to analyze the mechanism of longitudinal bending deformation due to welding. Welding experiments and numerical analyses were performed for this study. The welding experiments were performed on 4 mm and 8.5 mm thickness steel plates, and the numerical analysis was conducted on the welding deformation using the FE software MSC.marc.

용접변형이란 용접열원에 의해 구조물에 생성되는 불균일 온도분포에 의해서 발생하는 영구적인 변형이다. 용접변형은 용접구조물의 강도와 외관 및 치수 정밀도를 저하시킴으로써 생산성 저하의 주원인이 되기도 하며, 이러한 용접변형을 제어하기 위해 많은 실험과 연구가 수행되었다. 본 논문은 용접시 발생되는 변형 중에 하나인 종굽힘에 대하여 실험과 수치적 해석결과를 통해 비교 및 분석하였으며, 이를 통해 종굽힘 용접변형의 생성기구에 대하여 연구한 것이다. 용접실험은 4, 8.5 mm 두께의 평판에 대해 실시하였으며, 수치적 해석은 MSC.marc 상용프로그램을 사용하였다.

Keywords

References

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