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In this study, an engineering scale model for the simulation of Selective Laser Sintering (SLS) of industry level parts made of Polyamide 12 (PA 12) is introduced. This model is employed to investigate the evolution of temperature, stresses, deformations, and phase transformations during the SLS process. A finite element model is constructed using ABAQUS for a stack of five circular plates. The chemical kinetics, the thermoelastic and the thermoviscoelastic (TVE) material behavior of PA 12 are programmed with Fortran in three ABAQUS subroutines, needed due to phase changes occurring during the process. The computations are performed for both elastic and time-dependent constitutive mechanical laws. The results are compared and assessed.

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Distortion and Residual Stresses in an Additively Manufactured Disk Stack: Continuum Modeling and FEM Simulation for Polyamide 12

  • 章节

  • 发表日期：

    2025年

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  • Umut Kaya,
  • Alfons Noe

摘要

In this study, an engineering scale model for the simulation of Selective Laser Sintering (SLS) of industry level parts made of Polyamide 12 (PA 12) is introduced. This model is employed to investigate the evolution of temperature, stresses, deformations, and phase transformations during the SLS process. A finite element model is constructed using ABAQUS for a stack of five circular plates. The chemical kinetics, the thermoelastic and the thermoviscoelastic (TVE) material behavior of PA 12 are programmed with Fortran in three ABAQUS subroutines, needed due to phase changes occurring during the process. The computations are performed for both elastic and time-dependent constitutive mechanical laws. The results are compared and assessed.