Finite Element Analysis of Selective Laser Melting of GH4169 Thin-walled Parts
This study employs finite element simulation to investigate the effects of laser scanning speed and powder layer thickness on the formation quality of thin-walled parts made from GH4169 material using selective laser melting(SLM).By analyzing the temperature and stress fields during the SLM process,a transient thermal-structural coupled field model was developed to assess the formation of thin-walled parts.The findings reveal that increasing the scanning speed,which reduces energy density,leads to a reduction in part dimensions and stress levels.Conversely,augmenting the powder layer thickness enhances the temperature gradient,resulting in greater size deviations and increased residual stresses upon cooling.Optimal printing outcomes were achieved at a scanning speed of 1 200 mm/s with a powder layer thickness of 0.03 mm.Ex-perimental validation confirms that the actual deformation data aligns with the trends predicted by the finite element simulation,indicating that this method provides an effective simulation of the experimental process.
GH416selective laser melting(SLM)formingsimulationtemperature fieldstress field
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