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Potentials of the ALE-Method for Modeling Plastics Welding Processes, in Particular for the Quasi-Simultaneous Laser Transmission Welding

  • The Arbitrary-Lagrangian-Eulerian-Method (ALE-Method) offers the possibility to model the quasi-simultaneous laser transmission welding of plastics, in which a squeeze-flow of molten plastic occurs. It is of great interest to get a deeper understanding of the fluid-structure-interactions in the welding zone, since the occurring squeeze-flow transports heated material out of the joining zone, causinga temperature decrease inside.In addition, the numerical modelling offers the possibility to investigate the flow conditions in the joining zone. The aim of this article is to show the potentials of the ALE-Method to simulatethe quasi-simultaneous laser transmission welding with the commercially available software LS-DYNA. The central challenge is to realize a bi-directionalthermo-mechanically coupled simulation,which considers the comparatively high thermal expansion and calculates the interactions of solid and melted plastic correctly. Finally, the potentials of the ALE element formulations for the mathematical description of welding processesare shown, especially for those with a squeeze-flow.

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Metadaten
Author:Anton Schmailzl, Sven Hüntelmann, Tobias Loose, Johannes Käsbauer, Frederik MaiwaldORCiD, Stefan HierlGND
DOI:https://doi.org/10.3217/978-3-85125-615-4-51
Parent Title (English):Mathematical Modelling of Weld Phenomena 12
Publisher:Verlag der Technischen Universität Graz
Place of publication:Graz
Editor:Christof Sommitsch, Norbert Enzinger, Peter Mayr
Document Type:Part of a Book
Language:English
Year of first Publication:2018
Release Date:2021/02/09
First Page:965
Last Page:975
Konferenzangabe:12th International Seminar ‘Numerical Analysis of Weldability‘, which was held from September 23 to 26, 2018, at Schloss Seggau near Graz, Austria
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Laser-Materialbearbeitung (LMP)
Begutachtungsstatus:peer-reviewed
research focus:Produktion und Systeme