3D accurate finite element simulation of various friction stir welding phases: plunging, dwelling, welding
- Assidi M. ,
- Guerdoux S. and
- Fourment L.
- Assidi M. ,
- Guerdoux S. and
- Fourment L.
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An arbitrary Lagrangian Eulerian (ALE) formulation was developed to simulate the plunge, dwell and welding stages of the friction stir welding process using "FORGE3" finite element software, and the friction coefficients from a viscoplastic law were calibrated against experimentally measured forces. Material deformation was modelled by elasto-visco-plastic constitutive equations, contact by a penalty formulation and interface friction conditions by a Norton friction law. The ALE methodology was employed to simulate transient welding phases, void formation and the influence of pin threads on material flow and wormhole disappearance. Prediction of the tool-material contact area and possible loss of contact behind the pin are discussed.
7th International Symposium, 20-22 May 2008, Poster Session, Paper 10
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