Multi-physics modelling of bobbin-tool friction stir welding - simulation and experiments
- Deloison D. ,
- Marie F. ,
- Guerin B. ,
- et al
- Deloison D. ,
- Marie F. ,
- Guerin B. and
- Journet B.
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Description
A multi-physics model for thermal simulation of bobbin-tool friction stir welding was developed assuming a partially sticking condition at the tool-matrix interface, and simulation results were compared with experimental data for welding of AA7449 alloy coupons. The modelling approach was formulated by combining a 2D axisymmetric flow model at the local scale and a 3D thermal stationary global model. The welding system considered incorporated 7449-W511 machined profiles welded in a butt joint configuration, a rotational speed of 200 rpm and feed rate of 50 mm/min. Rheology and yield stress were derived from torsion tests. The influence of sticking coefficient and friction coefficient on total computed power is discussed.
7th International Symposium, 20-22 May 2008, 11B: Modelling 2, Paper 02
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