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| − | | + | *[[Finite element modelling of Wire-Arc-Additive-Manufacturing process]] |
| − | '''Title''': Finite element modelling of Wire-Arc-Additive-Manufacturing process
| + | *[[Selection of optimal process parameters for wire arc additive manufacturing]] |
| − | | + | *[[Cutting forces analysis in additive manufactured AISI H13 alloy]] |
| − | '''Authors''': Filippo Montevecchi, Giuseppe Venturini , Antonio Scippa , Gianni Campatelli
| + | *[[Environmental and economic comparison between WAAM and machining]] |
| − | | + | *[[Additive manufacturing by means of laser-aided directed metal deposition of 2024 aluminium powder]] |
| − | '''Keywords''': Welding; Finite element method (FEM)
| + | *[[Finite element(FEM) modelling of Wire-Arc-Additive-Manufacturing process]] |
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| − | '''Abstract''': Wire-Arc-Additive-Manufacturing (WAAM) is an Additive-Manufacturing (AM) process, allowing to produce metal components layer by layer by means of Gas-Metal-Arc-Welding (GMAW) technology. The advantages of this technology are the capability to create large parts with a higher deposition rate, but the disadvantages are that WAAM components are affected by severe distortions and residual stresses issues. Process simulation is a powerful tool to tackle such issues, allowing to test the effect of different deposition patterns on residual stresses field, optimizing the process.
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| − | '''Purpose''': Obtain more accurate results with a WAAM modelling strategy based on a novel heat source model that takes into account the actual power distribution between filler and base materials.
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| − | '''Design/methodology/approach''': the heat transfer from the arc to the molten pool is simulated using a heat source model, which prescribes a heat generation per unit volume in the molten pool region. Material deposition is taken into account by means of specific elements activation algorithms.
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| − | In this paper, the WAAM process is simulated using a novel definition of the heat source, based on a modified Goldak model, in order to have a more realistic heat flow distribution in the filler material.
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| − | '''Findings''': this model has a better correlation with the experimental results than the previous models.
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| − | '''Benefits''': proposed modelling results are in general agreement with the experimental ones, allowing to achieve an higher accuracy with respect to the traditional technique.
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| − | '''Practical implications''': proposed process modelling allows to accurately simulate the WAAM process, without the need to perform time-consuming tuning operations to identify heat source parameters.
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| − | [[File:Finite element Modelling.png|miniatura]]
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| − | '''Full reference''': Procedia CIRP 55
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| − | '''Link''': www.sciencedirect.com/science/article/pii/S2212827116309131
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