Simulation of printer nozzle for 3D printing TNT/HMX based melt-cast explosive

被引：0
作者：
Huzeng Zong
Qilun Cong
Tengyue Zhang
Yanjun Hao
Lei Xiao
Gazi Hao
Guangpu Zhang
Hu Guo
Yubing Hu
Wei Jiang
机构：
[1] Nanjing University of Science and Technology,National Special Superfine Powder Engineering Technology Research Center
[2] Shandong Non-Metal Materials Research Institute,undefined
[3] China Research and Development Academy of Machinery Equipment,undefined
[4] The Third Army Agency Office Stationed in Taiyuan,undefined
来源：
The International Journal of Advanced Manufacturing Technology | 2022年 / 119卷
关键词：
3D printing; FDM; TNT/HMX; FLUENT; Numerical simulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Fused deposition modeling (FDM) as one of the additive manufacturing (AM) technologies has been widely used in various manufacturing industries to fabricate products with complex structures; however, the application of FDM in energetic materials (EMs) was still less common. In this work, the effect of HMX solid content and particle size on the viscosity of molten TNT/HMX explosives were investigated. Then, the computational fluid dynamics (CFD) and discrete element method (DEM) were used to simulate the influence of viscosity, pressure, temperature, nozzle diameter, and particles on the fluid flow inside the 3D printer nozzle. In addition, an FDM 3D printer was used to prepare TNT/HMX-based explosives, and various characterization methods were applied to explore the structure and morphology of printed samples. This work provided guidelines for FDM technology to fabricate EMs and proved that FDM was more suitable than the conventional melt-casting method to prepare explosives with high viscosity and special-shaped structures.
引用
收藏
页码：3105 / 3117
页数：12
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