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Fast generation and prediction of welding temperature fields for multiple experiments

  • The objective of this paper is to demonstrate a new simulation technique which allows the fast and automatic generation to temperature fields based on a combination of empirical and phenomenological modelling techniques. The automatic calibration of the phenomenological model is performed by a multi-variable global optimisation routine which yields the optimal fit between simulated and experimental weld charcteristics without the need for initial model parameters. For exemplary welding processes it is shown that linear 3D heat conduction models can approximate measured temperature fields with a high accuracy. The modelling approach presented comprises the automatic calibration against multiple experiments which permits simulating the temperature field for unknown process parameters. The validation of this composite simulation model is performed for exemplary welding processes and includes the prediction of the fusion line in the cross section and the corresponding thermal cycles.

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Autoren/innen:Andreas Pittner, D. Weiss, Christopher Schwenk, Michael Rethmeier
Persönliche Herausgeber/innen: V.I. Makhnenko
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Titel des übergeordneten Werkes (Englisch):Mathematical modelling and information technologies in welding and related processes - 4th International Conference (Proceedings)
Jahr der Erstveröffentlichung:2008
Herausgeber (Institution):E.O. Paton Electric Welding Institute of the NAS of Ukraine
Verlagsort:Kiev, Ukraine
Erste Seite:134
Letzte Seite:140
Freie Schlagwörter:GMA-laser hybrid welding; Global optimisation; Inverse heat conduction problem; Laser beam welding; Model prediction; Neural networks; Stochastic search method; Welding simulation
Veranstaltung:4th International Conference - Mathematical modelling and information technologies in welding and related processes
Veranstaltungsort:Katsiveli, Crimea, Ukraine
Beginndatum der Veranstaltung:2008-05-27
Enddatum der Veranstaltung:2008-05-30
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