Comptes Rendus
no. 5-6
A thermo-hydraulic numerical model to study spot laser welding
[Un modèle numérique thermo-hydraulique pour l'étude du soudage laser impulsionnel]
Marc Medale1  ; Charline Xhaard1, 2  ; Rémy Fabbro3
1 Polytech'Marseille et IUSTI, UMR 6595 CNRS-université de Provence, technopole de Château-Gombert, 5, rue Enrico-Fermi, 13453 Marseille cedex 13, France
2 CEA Valduc, DFTN/SPAC/LSO, 21000 Is-sur-Tille, France
3 CLFA/LALP, UPR CNRS 1578, 16 bis, avenue Prieur de la Côte d'Or, 94114 Arcueil cedex, France
Comptes Rendus. Mécanique, Volume 335 (2007) no. 5-6, pp. 280-286.

L'objectif de cette étude vise à mieux comprendre les mécanismes de base à l'origine de défauts en cours de soudage par laser impulsionnel. Dans ce but, nous avons développé un modèle numérique qui tient compte de la dynamique de creusement en mode key-hole, ainsi qu'un modèle de dépôt d'énergie incluant les effets de réflexions multiples. Plusieurs expériences ont permis de mettre en évidence divers types de défauts. Les simulations numériques de certains de ces scénarios ont été effectuées et comparées aux résultats éxpérimentaux.

The aim of this study is to better understand the basic mechanisms leading to defect occurrence in spot laser welding. For that purpose we have developed a numerical model, which takes into account the key-hole dynamics together with a dedicated energy deposition model featuring the multiple reflection effects. Many experiments have also been achieved enabling us to report several defect classes. The analysis of some of these scenarios have been performed, and favourably compared to experiments.

Publié le :
DOI : 10.1016/j.crme.2007.05.013
Keywords: Computational fluid mechanics, Spot laser welding, Free and moving interface
Mot clés : Mécanique des fluides numérique, Soudage laser impulsionnel, Surface libre et mobile
Marc Medale 1 ; Charline Xhaard 1, 2 ; Rémy Fabbro 3

1 Polytech'Marseille et IUSTI, UMR 6595 CNRS-université de Provence, technopole de Château-Gombert, 5, rue Enrico-Fermi, 13453 Marseille cedex 13, France
2 CEA Valduc, DFTN/SPAC/LSO, 21000 Is-sur-Tille, France
3 CLFA/LALP, UPR CNRS 1578, 16 bis, avenue Prieur de la Côte d'Or, 94114 Arcueil cedex, France 
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     title = {A thermo-hydraulic numerical model to study spot laser welding},
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Marc Medale; Charline Xhaard; Rémy Fabbro. A thermo-hydraulic numerical model to study spot laser welding. Comptes Rendus. Mécanique, Volume 335 (2007) no. 5-6, pp. 280-286. doi : 10.1016/j.crme.2007.05.013. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2007.05.013/

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