자유표면변형을 고려한 저에너지밀도 레이저 용접공정 해석
- Title
- 자유표면변형을 고려한 저에너지밀도 레이저 용접공정 해석
- Other Titles
- A study of low-power density laser welding process with evolution of free surface
- Author
- 김우승
- Keywords
- laser welding(레이저 용접); free surface(자유표면); Marangoni convection(마랑고니 대류); continuum surface force(연속표면력)
- Issue Date
- 2003-11
- Publisher
- 대한기계학회
- Citation
- 대한기계학회 2003년 추계학술대회논문집, Page.133-138
- Abstract
- In this study, numerical investigation has been performed on the evolution of weld pool geometry with moving free surface during low-energy density laser welding process. The free surface elevates near the weld pool edge if ∂σ/dT is dominantly negative. On the contrary, the free surface rise at the center of weld pool in case of mainly positive ∂σ/dT. The predicted weld pool width and depth with moving free surface are 5∼15% greater than those with flat weld pool surface. It is considered that weld pool surface oscillation during melting process augments convective heat transfer rate in the weld pool.
- URI
- http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00548934&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/154260
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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