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Mathematical analysis of the bulging effect in high power laser beam welding of thick steel sheets
- The present work is devoted to the mathematical analysis of the bulging effect in high-power laser beam welding of thick steel sheets. The numerical results are based upon experimental results from previous studies, revealing the relationships between the bulging effect, the hot cracking formation, and the distribution of alloying elements in the weld pool. The widening of the molten pool in its middle area is observed for both complete and partial penetration welding of 8 mm - 15 mm thick structural steel sheets. The weld pool shape is extracted from the simulations to evaluate the extent of the necking and bulging of the solidification isotherm and their influence on the hot cracking formation and the mixing behavior of the weld pool. Relying on an earlier numerical study utilizing a fixed keyhole, simulation models considering a dynamic keyhole are developed thereto. The link between the bulge and the studied phenomena is found to be significant.
Autor*innen: | Antoni ArtinovORCiD |
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Koautor*innen: | Xiangmeng MengORCiD, Marcel BachmannORCiD, Michael RethmeierORCiD |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 9 Komponentensicherheit |
9 Komponentensicherheit / 9.3 Schweißtechnische Fertigungsverfahren | |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Bulge effect; Deep penetration laser beam welding; Hot cracking; Mixing behavior; Necking; Numerical modelling |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Veranstaltung: | Beam Technologies & Laser Applications |
Veranstaltungsort: | Saint Petersburg, Russia |
Beginndatum der Veranstaltung: | 20.09.2021 |
Enddatum der Veranstaltung: | 24.09.2021 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 27.09.2021 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |