基于打印头温度场模拟的织物打印工艺与性能
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摘要
根据打印头尺寸和材料的热物性参数建立喷头传热模型,利用Solidworks Simulation插件对一定载荷温度条件下稳态传热进行了有限元分析,得到喷头打印稳态温度场。根据有限元分析结果并结合打印实验分析了基础组织(平纹、2/1右斜、5/3经面缎纹)结构的打印织物对其力学性能的影响。结果表明:小截面织物组织中浮长线越长,聚乳酸(PLA)材料本身性能利用率越高,成型质量佳,5/3经面缎纹织物的力学性能表现优异;交织点越多,结构发挥的效果越佳,平纹织物综合力学性能仅次于缎纹,斜纹织物力学测试性能最差;同时实验观察发现,打印层与层界面瞬态温度和层高对打印织物性能及外观也有影响,指明了存在的问题和进一步研究的方向。
Establishment nozzle heat transfer model based on thermal parameters of the print head size and material,the use of plug-ins for Solidworks Simulation under certain loading conditions of steady-state temperature heat transfer finite element analysis,the print head steady state temperature field.According to the results of finite element analysis and experimental analysis of the combined print based organization(plain,2/1right oblique,5/3satins)affect print fabric structure on mechanical properties.The results showed that:a small section of the weave in the longer floats,higher capacity utilization using polylactide material itself,forming good quality,excellent 5/3mechanical properties of a satin fabric performance.Interleaving more points,the better the effect of the structure of play,second only to the mechanical properties of plain satin fabric,twill fabric mechanical testing worst performance.Meanwhile experimental observations found that the print layers interface with the story of transient temperature performance and appearance of printed fabrics also have an impact,pointed out the existing problems and further research directions.
Establishment nozzle heat transfer model based on thermal parameters of the print head size and material,the use of plug-ins for Solidworks Simulation under certain loading conditions of steady-state temperature heat transfer finite element analysis,the print head steady state temperature field.According to the results of finite element analysis and experimental analysis of the combined print based organization(plain,2/1right oblique,5/3satins)affect print fabric structure on mechanical properties.The results showed that:a small section of the weave in the longer floats,higher capacity utilization using polylactide material itself,forming good quality,excellent 5/3mechanical properties of a satin fabric performance.Interleaving more points,the better the effect of the structure of play,second only to the mechanical properties of plain satin fabric,twill fabric mechanical testing worst performance.Meanwhile experimental observations found that the print layers interface with the story of transient temperature performance and appearance of printed fabrics also have an impact,pointed out the existing problems and further research directions.
引文
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2 王柏通.3D打印喷头的温度分析及控制策略研究[D].长沙:湖南师范大学,2014
3 纪良波.熔融沉积成型有限元模拟与工艺优化研究[D].南昌:南昌大学,2011
4 高金岭.FDM快速成型机温度场及应力场的数值模拟仿真[D].哈尔滨:哈尔滨工业大学,2014
5 袁贝贝.基于分区变层厚的熔融沉积成型技术研究[D].济南:山东大学,2015
6 张钰.聚醚醚酮仿生人骨3D打印热力学仿真及实验研究[D].长春:吉林大学,2014
7 陈熙.回转式挤喷头温度场的建模与仿真[D].长沙:湖南师范大学,2007
8 DS SolidWorks?公司.SolidWorks?Simulation高级教程[M].北京:机械工业出版社,2011:35
9 陶文铨.传热学[M].西安:西北工业大学出版社,2006:35
10 王丽萍.低温固体接触界面热阻分析与仿真研究[D].武汉:华中科技大学,2009
11 王运赣,王宣.3D打印技术修订本[M].武汉:华中科技大学出版社,2014:81
12 苏州聚复高分子材料有限公司.快速成型形状记忆高分子材料及其制备方法和应用:中国,CN201310117649.7[P].2013-06-19
13 苏州聚复高分子材料有限公司.用于快速成型的纳米增韧聚乳酸材料及其制备方法:中国,CN201310117650.X[P].2013-06-12
14 谷攀攀,马丹丹,汪东琰,等.三维立体打印织物的制备及其拉伸性能[J].材料导报:研究篇,2016,30(1):99
15 逯琪.可降解形状记忆材料的制备、结构及性能[D].上海:复旦大学,2009