<p>In this study, the material extrusion-based additive manufacturing process of TiC steel-bonded carbide slurries with solid contents ranging from 44 to 52 vol% was simulated using ANSYS Polyflow. The flow behavior, including shear stress and viscosity distribution within the barrel and nozzle, was analyzed to evaluate printability. The results show that printability initially improves with increasing solid content, peaking at 50 vol%, after which it declines. Simulation results were validated experimentally, showing good agreement. Optimal printing performance and product precision were achieved when the outlet viscosity ranged from 90 to 132&#xa0;Pa·s at a printing speed of 10&#xa0;mm/s. This study demonstrates that numerical simulation is an effective tool for optimizing printing parameters and improving print quality in material extrusion additive manufacturing.</p>

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Finite element simulation of the slurry printing process in material extrusion additive manufacturing

  • Xuanzheng Zhou,
  • Yunchen Zhang,
  • Yaping Sun,
  • Wenjie Lv,
  • Huiping Shao,
  • Tao Lin

摘要

In this study, the material extrusion-based additive manufacturing process of TiC steel-bonded carbide slurries with solid contents ranging from 44 to 52 vol% was simulated using ANSYS Polyflow. The flow behavior, including shear stress and viscosity distribution within the barrel and nozzle, was analyzed to evaluate printability. The results show that printability initially improves with increasing solid content, peaking at 50 vol%, after which it declines. Simulation results were validated experimentally, showing good agreement. Optimal printing performance and product precision were achieved when the outlet viscosity ranged from 90 to 132 Pa·s at a printing speed of 10 mm/s. This study demonstrates that numerical simulation is an effective tool for optimizing printing parameters and improving print quality in material extrusion additive manufacturing.