含能材料3D打印机喷嘴参数对挤出速度的影响
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摘要
在熔融沉积(FDM)成型机的基础上,设计了一种适用于含溶剂的含能材料挤出成型的气压式喷头。利用了正交实验原理及有限元软件ANSYS/FLOTRAN,探讨了喷头的关键尺寸对挤出速度的影响规律,得出了各因素对挤出速度的影响程度,并建立了挤出速度与流道关键尺寸之间的指数预测模型,研究结果表明,最主要的影响参数为喷嘴直径大小,其次为成型段长度,入口收缩角等因素影响较小。所得指数预测模型与CFD计算值结果误差在8%左右,即可根据指数预测模型,通过调节压力大小来获取较为精确的挤出速度。
On the base of Fused Deposition Modeling(FDM),design an air pressure extrusion system which applicable to solvent method energetic material. By using the Orthogonal Experimental principle and the FEA software named ANSYS/FLOTRAN. Discuss the effect of nozzle's key size on the extrusion rate,conclude the influence of each parameter on extrusion rate. Establish an index prediction model about extrusion rate and parameter of nozzle flow. The result show that the main parameter is nozzle diameter and then the length of forming station,entrance shrinking angle and others are less influencing. And its 8% deviation between index prediction model and CFD calculation value.So according to the index prediction model,it can get a precise extrusion rate by adjusting the pressure.
On the base of Fused Deposition Modeling(FDM),design an air pressure extrusion system which applicable to solvent method energetic material. By using the Orthogonal Experimental principle and the FEA software named ANSYS/FLOTRAN. Discuss the effect of nozzle's key size on the extrusion rate,conclude the influence of each parameter on extrusion rate. Establish an index prediction model about extrusion rate and parameter of nozzle flow. The result show that the main parameter is nozzle diameter and then the length of forming station,entrance shrinking angle and others are less influencing. And its 8% deviation between index prediction model and CFD calculation value.So according to the index prediction model,it can get a precise extrusion rate by adjusting the pressure.
引文
[1]王泽山.含能材料概论[M].哈尔滨:哈尔滨工业大学出版社,2006.(Wang Ze-shan.Introduction to Energetic Materials[M].Harbin:Harbin Institute of Technology Press,2006.)
[2]朱珠,雷林,罗向东.含能材料3D打印技术及应用现状研究[J].兵工自动化,2015,34(6):52-55.(Zhu Zhu,Lei Ling,Luo Xiang-dong etc.Researchon applicationof3DPrinting technologyof energetic materials[J].Ordnance Industry Automation,2015,34(6):52-55.)
[3]卢秉恒.增材制造(3D打印)技术发展[J].机械制造与自动化,2013,42(4):1-4.(Lu Bing-heng.Developmentofthe additive manufacturing(3D-printing)technology[J].Mechine Building&Automation,2013,42(4):1-4.)
[4]王伊卿,何仲云,方勇.气压熔融挤压快速成型材料及其成形工艺研究[J].西安交通大学学报,2010,44(1):100-104.(Wang Yi-qing,He Zhong-yun,Fang Yong.Materialand prototyping processin air pressure fused deposition manufacturing[J].Xi’an Jiaotong University,2010,44(1):100-104.)
[5]廖华勇,陶国良.两种高密度聚乙烯熔体的粘度曲线[J].常州大学学报:自然科学版,2012,24(4):37-41.(Liao Hua-yong,Tao Guo-liang.Viscosity curves of two high density polyethelene melts[J].Journal of Changzhou University:Natural Science Edition,2012,24(4):37-41.)
[6]刘文卿.实验设计[M].北京:清华大学出版社,2005.(Liu Wen-qing.Experimental Design[M].Bei Jing:Tsinghua University Press,2005.)
[7]Anoop Kumar Sood,R.K.Ohdar,S.S,Mahapatra.Parametric appraisal of mechanical property of fused deposition modelling processed parts[J].Materials and Design,2010,37(4):287-295.
[8]张洪才,孙长青.ANSYS14.0/FLOTRAN理论解析与工程应用实例[M].北京:机械工业出版社,2013.(Zhang Hong-cai,Sun Chang-qing.ANSYS14.0/FLOTRAN Theory Analysis and Engineering Application Example[M].Beijing:China Machine Press,2013.)
[2]朱珠,雷林,罗向东.含能材料3D打印技术及应用现状研究[J].兵工自动化,2015,34(6):52-55.(Zhu Zhu,Lei Ling,Luo Xiang-dong etc.Researchon applicationof3DPrinting technologyof energetic materials[J].Ordnance Industry Automation,2015,34(6):52-55.)
[3]卢秉恒.增材制造(3D打印)技术发展[J].机械制造与自动化,2013,42(4):1-4.(Lu Bing-heng.Developmentofthe additive manufacturing(3D-printing)technology[J].Mechine Building&Automation,2013,42(4):1-4.)
[4]王伊卿,何仲云,方勇.气压熔融挤压快速成型材料及其成形工艺研究[J].西安交通大学学报,2010,44(1):100-104.(Wang Yi-qing,He Zhong-yun,Fang Yong.Materialand prototyping processin air pressure fused deposition manufacturing[J].Xi’an Jiaotong University,2010,44(1):100-104.)
[5]廖华勇,陶国良.两种高密度聚乙烯熔体的粘度曲线[J].常州大学学报:自然科学版,2012,24(4):37-41.(Liao Hua-yong,Tao Guo-liang.Viscosity curves of two high density polyethelene melts[J].Journal of Changzhou University:Natural Science Edition,2012,24(4):37-41.)
[6]刘文卿.实验设计[M].北京:清华大学出版社,2005.(Liu Wen-qing.Experimental Design[M].Bei Jing:Tsinghua University Press,2005.)
[7]Anoop Kumar Sood,R.K.Ohdar,S.S,Mahapatra.Parametric appraisal of mechanical property of fused deposition modelling processed parts[J].Materials and Design,2010,37(4):287-295.
[8]张洪才,孙长青.ANSYS14.0/FLOTRAN理论解析与工程应用实例[M].北京:机械工业出版社,2013.(Zhang Hong-cai,Sun Chang-qing.ANSYS14.0/FLOTRAN Theory Analysis and Engineering Application Example[M].Beijing:China Machine Press,2013.)