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- W2801025455 abstract "The aim of this work is to address a modeling of the SLS process at the scale of the part in PA12 polymer powder bed. The powder bed is considered as a continuous medium with homogenized properties, meanwhile understanding multiple physical phenomena occurring during the process and studying the influence of process parameters on the quality of final product. A thermal model, based on enthalpy approach, will be presented with details on the multiphysical couplings that allow the thermal history: laser absorption, melting, coalescence, densification, volume shrinkage and on numerical implementation using FV method. The simulations were carried out in 3D with an in-house developed FORTRAN code. After validation of the model with comparison to results from literature, a parametric analysis will be proposed. Some original results as densification process and the thermal history with the evolution of the material, from the granular solid state to homogeneous melted state will be discussed with regards to the involved physical phenomena." @default.
- W2801025455 created "2018-05-17" @default.
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- W2801025455 date "2018-01-01" @default.
- W2801025455 modified "2023-10-18" @default.
- W2801025455 title "Numerical analysis of the heating phase and densification mechanism in polymers selective laser melting process" @default.
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- W2801025455 doi "https://doi.org/10.1063/1.5035005" @default.
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