ENCYCLOPÉDIE DE LA RECHERCHE SUR L’ALUMINIUM AU QUÉBEC 2013 | Page 76

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DÉVELOPPEMENT, OPTIMISATION ET INTÉGRATION DES PROCÉDÉS DE FABRICATION ET DE CONCEPTION
DEVELOPMENT, OPTIMIZATION AND PROCESS INTEGRATION OF MANUFACTURING AND DESIGN

Titre – langue première

(Titre – langue seconde)
NUMERICAL SIMULATION OF DOUBLE SIDED FRICTION
STIR WELDING WITH A BOBBIN TOOL
DU PROCÉDÉ SOUDAGE PAR FRICTION MALAXAGE AVEC

SIMULATION NUMÉRIQUE

OUTIL DOUBLE

SIMULATION NUMÉRIQUE DU PROCEDE SOUDAGE PAR
FRICTION MALAXAGE AVEC OUTIL DOUBLE

NUMERICAL SIMULATION OF DOUBLE SIDED FRICTION STIR WELDING WITH A BOBBIN TOOL
1er nom1, 2e nom2 et 3e nom3
1
2
3

Affiliation 1
Affiliation 2
Affiliation 3

Kirk Fraser, Lyne St-Georges and László I. Kiss
Université de Québec à Chicoutimi (UQAC)

Joining of aluminum alloys via friction stir welding (FSW) is gaining widespread acceptance. The process’s ability to
create high strength welds in a solid state with few imperfections makes the method very appealing for industrial and
commercial applications. More recently, a double sided FSW process was developed using a bobbin tool. One of the
main advantages of this approach is that hollow core sections can be welded. Also, the vertical force on the machine is
zero.

The results from the simulation is shown below, the first image shows the mixing results of the two work pieces during
the FSW process. The second image shows the temperature results, we can see that the hottest region is directly
under the welding tool. We can see that the tool creates a significant flaw as the tool initially cuts into the work pieces.
The SPH method is well adapted for simulating such defects, Fraser et al. [6] showed that the welding defects can be
simu ]Y