Multiphysics process simulation of the electromagnetic-supported laser beam welding
- A three-dimensional laminar steady state numerical model was used to investigate the influence of an alternating current (ac) magnetic field during high power laser beam keyhole welding of 20 mm thick nonferromagnetic aluminum. COMSOL Multiphysics was used to calculate the threedimensional heat transfer, fluid dynamics and electromagnetic field equations. Most important physical effects of the process were taken into account: Thermo-capillary (Marangoni) convection at the upper and lower weld pool boundaries, natural convection due to gravity and latent heat of solid-liquid phase transition. It is shown that the gravity drop-out associated with welding of thick plates due to the hydrostatic pressure can be prevented by the application of an ac magnetic field. The application of an oscillating magnetic field of 70 mT was investigated to allow for singlepass laser beam welding of thick aluminum plates. The flow pattern in the molten zone and the temperature distributions areA three-dimensional laminar steady state numerical model was used to investigate the influence of an alternating current (ac) magnetic field during high power laser beam keyhole welding of 20 mm thick nonferromagnetic aluminum. COMSOL Multiphysics was used to calculate the threedimensional heat transfer, fluid dynamics and electromagnetic field equations. Most important physical effects of the process were taken into account: Thermo-capillary (Marangoni) convection at the upper and lower weld pool boundaries, natural convection due to gravity and latent heat of solid-liquid phase transition. It is shown that the gravity drop-out associated with welding of thick plates due to the hydrostatic pressure can be prevented by the application of an ac magnetic field. The application of an oscillating magnetic field of 70 mT was investigated to allow for singlepass laser beam welding of thick aluminum plates. The flow pattern in the molten zone and the temperature distributions are significantly changed.…
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 2011 (Proceedings) |
Jahr der Erstveröffentlichung: | 2011 |
Herausgeber (Institution): | COMSOL Multiphysics GmbH |
Verlagsort: | Stuttgart |
Ausgabe/Heft: | 11122 / 8567_bachmann_paper |
Erste Seite: | 1 |
Letzte Seite: | 7 |
Freie Schlagwörter: | Electromagnetic weld pool support; Laser beam welding; Lorentz force; Marangoni stresses; Natural convection |
Veranstaltung: | COMSOL Conference 2011 |
Veranstaltungsort: | Ludwigsburg, Germany |
Beginndatum der Veranstaltung: | 2011-10-26 |
Enddatum der Veranstaltung: | 2011-10-28 |
ISBN: | 978-0-9839688-0-1 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |