데이터 기반의 레이저 용접 열원 모델인 다층 열원 모델의 파라미터 추정을 위한 연구
A study on estimation of parameters for multi-layer heat source model with laser welding based on experiment data
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Welding is one of representative manufacturing processes in the industrial field. Cryogenic storage containers are also manufactured through welding, and conversion to laser welding is issue in the field due to many advantages. Since welding causes thermal-elastic deformation, design considering distortion is required. Prediction of distortion through FEM is essential, but laser welding has difficulties in the field because there is no representative heat source model. The author presented the model that can cover various models using a multi-layer heat source model in previous studies. However the previous study has a limitation which is a welding heat source model must be derived after performing bead on plate welding. Thus this study was attempted to estimate the welding heat source parameters by comparing the shape of bead under various conditions. First, the difference between penetration shape and welding heat source parameters according to welding power was analyzed. The radius of the welding heat source increased according to the welding power, and the depth of the welding heat source also increased. The correlation between the penetration shape and the welding heat source parameter appears at a similar rate, however the follow-up research is necessary with more model data.
Abstract
Welding is one of representative manufacturing processes in the industrial field. Cryogenic storage containers are also manufactured through welding, and conversion to laser welding is issue in the field due to many advantages. Since welding causes thermal-elastic deformation, design considering distortion is required. Prediction of distortion through FEM is essential, but laser welding has difficulties in the field because there is no representative heat source model. The author presented the model that can cover various models using a multi-layer heat source model in previous studies. However the previous study has a limitation which is a welding heat source model must be derived after performing bead on plate welding. Thus this study was attempted to estimate the welding heat source parameters by comparing the shape of bead under various conditions. First, the difference between penetration shape and welding heat source parameters according to welding power was analyzed. The radius of the welding heat source increased according to the welding power, and the depth of the welding heat source also increased. The correlation between the penetration shape and the welding heat source parameter appears at a similar rate, however the follow-up research is necessary with more model data.
참고문헌 (8)
- D. Mori, "Recent challenges of hydrogen storage technologies for fuel cell vehicles", International Journal of Hydrogen Energy, 34(10), pp.4569~4574 (2009)
- 강상국, "복합재-알루미늄 양면겹치기 조인트를 이용한 접착제의 극저온 물성 평가", Composites Research, 19(4), pp.23~30 (2006), 한국복합재료학회
- 오현주, "극저온 환경에서 에폭시 접착제의 물성 향상을 위한 나노 보강재의 표면 개질에 관한 연구", Composites Research, 26(2), pp.129~134 (2013), 한국복합재료학회
- C. Pyo, "A study on a representative heat source model for simulating laser welding for liquid hydrogen storage containers", Marine Structures, 86, pp.103260~ (2022)[DOI]
- C. Pyo, "A Study on Welding Deformation in Fiber Laser Welding of 9% Nickel Steel through Finite Element Analysis Part I : Implementation of Welding Heat Source Model", Processes, 9(12), pp.2188~ (2021)
- H. Ma, "Enhancement on mechanical strength of adhesively-bonded composite lap joints at cryogenic environment using coiled carbon nanotubes", Composites Part B : Engineering, 110, pp.396~401 (2017)
- C. Bang, "Performance improvement by glass fiber of adhesively bonded metal joints at the cryogenic temperature", Composite Structures, 96, pp.321~333 (2013)
- J. Goldak, "A new finite element model for welding heat sources", Metall Mater Trans B, 15, pp.299~305 (1984)