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• W2978993110 abstract "The distribution of temperature and the formation of a solidified bead have considerable influence on single-pass selective laser melting (SLM). In this study, a transient three-dimensional numerical model is developed to simulate the evolution of the temperature field and the solidified bead by using smoothed-particle hydrodynamics, and the influences of processing parameters such as laser power, scanning speed, porosity, and thickness of the powder layer are studied and analyzed. The results show that the solidified bead forms as the powder material melts, and its shape changes from initially planar to a semicylindrical track because of the influence of the surface tension in the scanning process. Meanwhile, there is a discontinuous temperature distribution between the unmelted powder layer and the substrate material. Both the temperature distribution and the solidified bead deformation increase in the SLM process with the increase of the laser power and the porosity of the powder layer, but they both are apt to decrease with the increase of the scanning speed and the thickness of the powder layer. Experiments into the deformation distribution of the solidified bead and the dimensions of the molten pool are carried out under the same processing parameters, and the results are largely consistent with those from the simulation." @default.
• W2978993110 created "2019-10-10" @default.
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• W2978993110 date "2019-10-07" @default.
• W2978993110 modified "2023-09-27" @default.
• W2978993110 title "Simulation of the temperature distribution and solidified bead in single-pass selective laser melting using a mesh-free method" @default.
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• W2978993110 doi "https://doi.org/10.1063/1.5096041" @default.
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