| Project/Area Number |
04650663
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
溶接工学
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| Research Institution | Osaka University |
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Principal Investigator |
HIRATA Yoshinori Osaka University, Factry of Eng., Lecture, 工学部, 講師 (00116089)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | GMA welding / Bridging trasfer / Electromagnetic pinch force / Capillary phenomena / Numerical analysis / Marker and cell(MAC) method / Pendent drop / Mercury / マグ溶接 / 電流波形制御 / スパッタ / パルスアーク / 短絡溶接 / 電磁ピンチ力 |
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| Research Abstract |
The dynamics of brdging transfer are theoreticall and experinmentally investigated. Time-dependent deformation of the liquid bridge, which is formed between the electrode and the pool by a contact of a pendent drop with the pool surface, is obserbed by high speed photography and simulated with aids of the numerial solution technique for the dynamics of a biscous incompressible fluid with a free surface (MAC method) based on Finite-Difference Method. It is shown that the liquid of the pendent drop is driven to flow into the pool by the capillary force and the electromagnetic pinch force acting on the conducting bridge.
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