含能材料3D打印实验系统总体设计及工艺参数影响分析

发布时间：2017-12-30 19:14

本文关键词：含能材料3D打印实验系统总体设计及工艺参数影响分析　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文针对含能材料3D打印技术,以溶塑型含能材料为成型材料,对含能材料3D打印实验系统进行总体设计和系统搭建,并着重就工艺参数对成型精度的影响进行了实验研究。论文主要工作及结论如下:(1)以熔融沉积成型技术为基础,结合溶塑型含能材料成型特点,对含能材料3D打印实验系统进行了总体设计,并依据此完成对实验系统的搭建与调试,为后续成型实验的开展提供了实验平台;(2)基于传热学和热力学基本理论,利用ANSYS有限元分析软件,结合生死单元技术和ANSYS参数化设计语言,分别对喷头及成型过程的温度场分布进行了仿真研究。结果发现,喷头和成型过程整体温度分布均在安全温度范围内,成型过程安全,为工艺参数影响实验的安全进行提供了依据;(3)基于正交实验设计法,就填充速度、挤出速度、分层厚度以及填充方式对制件尺寸精度及密实度的影响规律进行了实验研究,并利用极差分析法对实验结果进行了单目标分析,得出了各工艺参数对单个优化目标的影响主次关系;(4)基于熵权TOPSIS模型,对正交实验结果进行多目标综合优化分析,并得出了最优工艺参数组合方案。经验证实验发现,在综合工艺目标上,优选出的最优方案较正交实验中最优方案提升了2.72%,验证了熵权TOSIS模型在含能材料3D打印工艺参数优化中应用的可行性;(5)依据优选出的工艺参数组合方案,以溶塑型含能材料真料为成型材料,完成对条状、单孔及星孔药柱的3D打印成型,验证了含能材料3D打印的可行性。
[Abstract]:According to the energetic material 3D printing technology, the solution model of energetic materials as raw materials, the experimental system of energetic material 3D printing design and system construction, and focus on the influence of process parameters on forming accuracy was studied. The main work and conclusions are as follows: (1) in fused deposition modeling technology as the foundation, combined with the solution model of energetic materials forming characteristics of the experimental system, 3D printing materials for the design, and on the basis of the completion of the building and debugging of the experimental system, provides experimental platform for further molding experiments; (2) the basic theory of heat transfer and thermodynamics based on the use of ANSYS Co. element analysis software, combined with the life and death element technology and ANSYS parametric design language, respectively. The temperature field distribution of nozzle and molding process are simulated. The results show that the nozzle and the forming process of the temperature distribution In a safe temperature range, the forming process of safety, process parameters affect the security provided a basis; (3) orthogonal experimental design method based on filling speed, extrusion speed, layer thickness and filling mode of experiment study of the influence of the size accuracy and compactness of the law, and the experimental results are the single objective analysis by using range analysis method, obtained the influence of process parameters on the relationship between primary and secondary single objective optimization; (4) entropy TOPSIS model based on the analysis of multi objective optimization of the orthogonal experiment, and the optimum process parameters were obtained. The combination scheme of the experiments showed that in the comprehensive process target, optimal the optimized scheme is orthogonal experiment optimum scheme improved 2.72%, verified the entropy TOSIS model in the application feasibility of the optimization of the process parameters of energetic materials 3D printing; (5) according to the selected. The parameters combination scheme, the dissolving of energetic materials is really material plastic molding materials, the completion of the strip, 3D print single hole Jixing grain, verified the feasibility of energetic material 3D printing.

【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ560.1;TP391.73

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