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 |
---|---|
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 |