Multi-physics process simulation of static magnetic fields in high power laser beam welding of aluminium
- A three-dimensional turbulent steady state numerical model was used to investigate the influence of a stationary magnetic field during partial penetration high power laser beam keyhole welding of thick aluminum parts. COMSOL Multiphysics was used to calculate the three-dimensional heat transfer, fluid dynamics and electromagnetic field equations. Thermo-capillary (Marangoni) convection at the upper weld pool surface, natural convection due to gravity and latent heat of solid-liquid phase transition were taken into account. It shows that the application of steady magnetic fields produces a braking Lorentz force in the melt based on the Hartmann effect. The flow pattern in the weld pool and also the temperature distribution and associated weld pool geometry thus change significantly. Convective flows in the melt can effectively be suppressed and the influence of thermo-capillary flow is diminished to a thin surface layer.
Autor*innen: | Marcel BachmannORCiD, Vjaceslav Avilov, Andrey GumenyukORCiD, Michael RethmeierORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | COMSOL Conference 2012 (Proceedings) |
Jahr der Erstveröffentlichung: | 2012 |
Herausgeber (Institution): | COMSOL Inc. |
Erste Seite: | 1 |
Letzte Seite: | 7 |
Freie Schlagwörter: | Buoyancy; Electromagnetic weld pool control; Laser beam welding; Lorentz force; Marangoni convection |
Veranstaltung: | COMSOL Conference 2012 |
Veranstaltungsort: | Milan, Italy |
Beginndatum der Veranstaltung: | 10.10.2012 |
Enddatum der Veranstaltung: | 12.10.2012 |
ISBN: | 978-0-9839688-7-0 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |