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基于高密度聚乙烯材料的3D打印数值仿真

Numerical Simulation of 3D Printing Based on High-Density Polyethylene Materials
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摘要 结合传统熔融沉积(FDM)3D打印机尺寸限制模型尺寸的现象,将高密度聚乙烯材料(HDPE)应用于3D打印领域。首先采用正交试验方法并结合ANSYS PolyFlow软件,研究料筒内流道结构参数及不同螺杆挤出量对流道内流体速度与温度的影响程度。结果表明,喷嘴内径对流体速度及流体温度的影响最大,对收敛角的影响最小。当挤出量为2 cm^(3)/s、喷嘴直径为4 mm、收敛角为150°时,工艺方案最佳。然后,进行挤出及打印试验,完成290 mm×175 mm×65 mm矩形模型的打印,证明HDPE在3D打印领域应用的可行性。最后,打印试件并进行拉伸试验,结果表明,与板材挤压制造的拉伸试件相比,3D打印制作的拉伸试件性能较差。 In view of the phenomenon that the size of the traditional melt deposition molding technology(FDM)three dimensional(3D)printer limited the size of the model,high-density polyethylene materials were applied in the field of 3D printing.Firstly,the orthogonal test method combined with ANSYS Polyflow software was used to study the influence of the structural parameters of the flow channel in the barrel and different screw extrusion rates on the fluid velocity and temperature in the flow channel.The results showed that the nozzle inner diameter had the greatest influence on the fluid velocity and temperature,and the convergence angle had the least influence.When the extrusion volume was 2 cm^(3)/s,the nozzle diameter was 4 mm,and the convergence angle was 150°,the process scheme was the best.Then carried out extrusion and printing experiments to complete the printing of 290 mm×175 mm×65 mm rectangular model to verify the feasibility of applying high-density polyethylene in the field of 3D printing.Finally,the test pieces were printed and subjected to tensile testing,and the results showed that the performance of the tensile test pieces made by 3D printing was slightly weaker than that of the tensile test pieces made by sheet extrusion.
作者 蒲海洋 隋江华 沈烈 杨冠英 刘润强 PU Haiyang;SUI Jianghua;SHEN Lie;YANG Guanying;LIU Runqiang(School of Navigation and Naval Architecture,Dalian Ocean University,Dalian,Liaoning 116000,China;Dalian Lanqi Shipbuilding Technology Co.,Ltd.,Dalian,Liaoning 116000,China)
出处 《塑料》 CAS CSCD 北大核心 2024年第3期28-33,55,共7页 Plastics
基金 辽宁省教育厅2021年度科学研究经费(面上项目)(LJKZ0726)。
关键词 3D打印 HDPE ANSYS 正交试验 拉伸试验 three dimensional printer high density polyethylene ANSYS orthogonal test tensile test
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