Meshfree simulation of oxide dispersion in MELD of aluminium alloys
- Escobar R. ,
- Fraser K. ,
- Jordan J.B. ,
- et al
- Escobar R. ,
- Fraser K. ,
- Jordan J.B. and
- Allison P.G.
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With regard to the development of the MELD process (formerly, additive friction stir deposition) involving the deposition of feedstock material on a substrate via a hollow rotating tool, a mesh-free coupled thermomechanical approach called smoothed particle hydrodynamics (SPH) was employed to model MELD in order to track oxide layer dispersion within the additively manufactured aluminium alloy component. Three MELD simulation models were created in which the feedstock and substrate were modelled using SPH material points and the hollow rotating tool, pusher and base were modelled using rigid finite elements. Four stages of the MELD process were modelled with SPHriction-3D. To incorporate the effect of process conditions on oxide dispersion, simulations were conducted at two rotational speeds and two advancing speeds.
12th International Symposium, 26-28 Jun 2018, Session 9B: Modelling II, Paper 03
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