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| 基于ANSYS的大尺寸FDM 3D打印喷头系统优化研究 |
| Research on the Optimization of the Large-Size FDM 3D Printing Nozzle System Based on ANSYS |
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| DOI：10.16018/j.cnki.cn32-1650/n.202501001 |
| 中文关键词: 熔融沉积 3D打印机 喷头系统 优化研究 |
| 英文关键词: fused deposition 3D printer nozzle system optimization research |
| 基金项目: |
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| 中文摘要: |
为了提高熔融沉积成型大尺寸3D打印机的成型效率及打印精度，利用有限元分析软件ANSYS对喷头系统的主要部件进行分析，得到喷嘴、喷头及散热装置的温度场分布，并据此对不同材料的喷嘴进行热-力耦合应力场分析。结果发现，在相同的工作条件下，不锈钢喷嘴底部的最低温度低于黄铜喷嘴，不锈钢喷嘴应力最大值大于黄铜材质；在喷嘴选用不锈钢材质时，在散热装置底部温度设为140 ℃的情况下，原散热装置顶部的最低温度为74. 546 ℃![]() ![]() ，而改进后散热器顶部的最低温度为48. 007?℃![]() ![]() ，优化后散热器的散热效果有明显提升，这也为优化前后喷头各测点的温度检测实验所证实。 |
| 英文摘要: |
| In order to improve the forming efficiency and printing accuracy of large-size fused deposition modeling (FDM) 3D printers, the finite element analysis software ANSYS is used to analyze the main components of the nozzle system, and the temperature field distributions of the nozzle, the print head and the heat dissipation device are obtained. Based on this, a thermal-mechanical coupling stress field analysis is carried out on nozzles made of different materials. The results show that, under the same working conditions, the lowest temperature at the bottom of the stainless steel nozzle is lower than that of the brass nozzle, and the maximum stress of the stainless steel nozzle is greater than that of the brass nozzle. When the stainless steel material is selected for the nozzle and the temperature at the bottom of the heat dissipation device is set at 140 °C, the lowest temperature at the top of the original heat dissipation device is 74. 546 °C, while the lowest temperature at the top of the improved heat sink is 48. 007 °C. The heat dissipation effect of the optimized heat sink has been significantly improved, which is also confirmed by the temperature detection experiments of each measuring point of the print head before and after the optimization. |
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