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3DP工艺中双液滴渗透数值模拟与仿真研究

王媛媛 杨伟东 贾鹏飞 牛子佳 张思祥

王媛媛, 杨伟东, 贾鹏飞, 牛子佳, 张思祥. 3DP工艺中双液滴渗透数值模拟与仿真研究[J]. 机械科学与技术, 2019, 38(3): 409-414. doi: 10.13433/j.cnki.1003-8728.20180194
引用本文: 王媛媛, 杨伟东, 贾鹏飞, 牛子佳, 张思祥. 3DP工艺中双液滴渗透数值模拟与仿真研究[J]. 机械科学与技术, 2019, 38(3): 409-414. doi: 10.13433/j.cnki.1003-8728.20180194
Wang Yuanyuan, Yang Weidong, Jia Pengfei, Niu Zijia, Zhang Sixiang. Study on Numerical Simulation of Double Droplets Infiltration in 3DP Technology[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(3): 409-414. doi: 10.13433/j.cnki.1003-8728.20180194
Citation: Wang Yuanyuan, Yang Weidong, Jia Pengfei, Niu Zijia, Zhang Sixiang. Study on Numerical Simulation of Double Droplets Infiltration in 3DP Technology[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(3): 409-414. doi: 10.13433/j.cnki.1003-8728.20180194

3DP工艺中双液滴渗透数值模拟与仿真研究

doi: 10.13433/j.cnki.1003-8728.20180194
基金项目: 

河北省自然科学基金项目 E2016202297

详细信息
    作者简介:

    王媛媛(1986-), 博士研究生, 研究方向为增材制造, 2012047@hebut.edu.cn

    通讯作者:

    杨伟东, 教授, 硕士生导师, ywd_stephen@163.com

  • 中图分类号: TP301

Study on Numerical Simulation of Double Droplets Infiltration in 3DP Technology

  • 摘要: 为了提高3DP工艺的精度,需预测粘结剂与颗粒材料粘结的形态,而通过实验很难观测到液滴在粉床中的渗透过程。本文通过应用水平集方法建立了双液滴渗透过程的数学模型,运用多物理场仿真软件COMSOL对其进行了数值模拟,分析了主要工艺参数-液滴水平间距和滴落高度对液滴渗透的形态的影响。同时为验证数学模型和仿真结果的一致性,搭建了实验平台,采用高速摄影对液滴的滴落渗透过程进行图像采集,并通过电子显微镜观测最终的凝聚形态。将实验结果与仿真结果进行了对比,验证了数值模拟的准确性,为进一步的实验研究提供了理论依据。
  • 图  1  双液滴撞击粉床物理模型

    图  2  不同间距下呋喃液滴的渗透形态

    图  3  不同高度呋喃液滴的渗透形态

    图  4  不同高度呋喃液滴刚撞击粉床时的扩散状态

    图  5  第二滴液滴的渗透时序图

    图  6  双液滴呋喃树脂的渗透形态单元

    表  1  呋喃树脂溶液参数表

    参数 密度/(kg·m-3) 动力粘度/(Pa·s) 表面张力/(N·m-1) 接触角/(°)
    数值 1.120×103 9.75×10-3 4.29×10-2 31.72
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-03-16
  • 刊出日期:  2019-03-05

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