毕业设计说明书中文摘要摘要:3D打印技术(3DP)是一种快速成型技术,将数据参数以数字化的形式建立成一个模型,并以此为基础运用粘合材料,使用3D打印机将打印材料于成型台上逐层打印来完成目标模型的制造。如今现代化武器药柱有了许多不同的复杂形状要求,而3D打印技术则可以很好的规避这些问题,满足现阶段对于含能材料的形状和数量要求,以便更好的量产。本设计说明书给出了五种3D打印机的喷嘴设计方案,利用Solid Works对流道结构进行了建模,并利用了Ansys中的POLYFLOW对设计的流道结构进行了关于压力、截面流速以及膨胀段的分析,并得出相关结论。关键词:3D打印,含能材料,流道结构,模拟分析毕业设计说明书外文摘要Title:Optimization of nozzle flow channel for energetic material 3D printersAbstract3D printing (3DP)is a rapid prototyping technology that digitally creates a model of thedata parameters and uses this as a basis for the manufacture of the target model byapplying bonding materials and printing them layer by layer on a 3D printer on aforming table.Today's modern weapons pillars have many different and complex shaperequirements,and 3D printing technology is a good way of circumventing theseproblems and meeting the current requirements for shapes and quantities of energy-containing materials for better mass production.This design brief gives five nozzledesigns for 3D printers.The runner structure was modelled using SolidWorks andanalysed using POLYFLOW in Ansys regarding pressure,cross-sectional flow rate andexpansion section,and relevant conclusions were drawn.Keywords:3D printing,energetic materials,channel structure,simulation analysis本科毕业设计说明书第1目次声明21绪论.4444444444444444444444444444444444444444。1.】研究背景.11.23D打印.21.2.13D打印技术介绍…21.2.1.1熔融沉积成型(FDM..21.2.1.2电子束熔化成型(EBM)31.2.1.3分层实体制造(L0M).41.2.23D的打印原理…41.2.33D打印技术国内外应用现状.51.3含能材料的介绍和应用.51.43D打印技术在含能材料领域的应用与前景.61.53D打印技术应用于炸药领域的优势分析.。71.6针对含能材料3D打印难点提出的解决方案…82聚合物流变学基础。.92.1聚合物熔体流变性质.92.l.1非时间依赖性非牛顿流体(Shear--Rate-Dependent Fluid).l02.l.2时间依赖性非牛顿流体(Temperature-.Dependent fluid).1l2.1.3黏弹性流体(Viscoelastic fluid).112.2有限元分析方法123含能材料3D打印不同流道喷嘴仿真模拟及分析….133.1模拟假设前提.133.2不同喷嘴流道的挤出过程模拟.143.2.1模拟思路143.2.2流道分块与网格划分.153.2.3边界条件与材料参数的设定…173.3结果与分析….183.3.1压力场分析.183.3.2截面流速分析.203.3.3自由段膨胀分析214.总结与展望….23
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