气动式微滴按需喷射装置的建模与仿真
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摘要
为了研究气动式微滴喷射装置的数字模型和工作机理,建立喷射装置的理论模型,分析影响腔内压力震荡频率的因素.基于AMESim仿真平台建立喷射装置物理仿真模型,研究控制参数对喷射装置腔内压力的影响,以明确微滴按需喷射的实现条件.结果表明,喷射装置符合空腔谐振模型,且腔内压力振动特性只与结构参数有关,得到了实现微滴按需喷射的条件,腔内压力振动频率理论和仿真结果吻合较好.
In order to study the mathematical model and the working mechanism of the droplet generator,the theoretical model is established,and the factors which influence the vibration frequency of the cavity pressure are analyzed.The physics simulation model of droplet generator is built based on AMESim simulation platform to study the parameter setting which affects the cavity pressure of the droplet generator,in order to determine the conditions in which the droplet on-demand injection happens.The results show that the droplet generator conforms to the cavity resonance model,and the characteristics of cavity pressure vibration are only related to structure parameters.Meanwhile,the conditions of realizing droplet ejction on demand are obtained,and the results of simulation are consistent with the theory of cavity pressure vibrationwell.
In order to study the mathematical model and the working mechanism of the droplet generator,the theoretical model is established,and the factors which influence the vibration frequency of the cavity pressure are analyzed.The physics simulation model of droplet generator is built based on AMESim simulation platform to study the parameter setting which affects the cavity pressure of the droplet generator,in order to determine the conditions in which the droplet on-demand injection happens.The results show that the droplet generator conforms to the cavity resonance model,and the characteristics of cavity pressure vibration are only related to structure parameters.Meanwhile,the conditions of realizing droplet ejction on demand are obtained,and the results of simulation are consistent with the theory of cavity pressure vibrationwell.
引文
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[2]WANG L,LIU J.Liquid phase 3Dprinting for quickly manufacturing conductive metal objects with low melting point alloy ink[J].Science China Technological Sciences,2014,57(9):1721-1728.
[3]金矿矿,胥光申,王亚宁,等.利用改进扫描线法的面曝光快速成形的掩模图形[J].西安工程大学学报,2014,28(6):730-734.JIN Kuangkuang,XU Guangshen,WANG Yaning,et al.Using the improved scan line algorithm to generate the mask image in mask projection stereo-lithography system[J].Journal of Xi′an Polytechnic University,2014,28(6):730-734.
[4]孙怀远,周玉栋,廖跃华,等.微喷技术在生物医药领域的应用[J].科技导报,2010,28(20):97-100.SUN Huaiyuan,ZHOU Yudong,LIAO Yuehua,et al.Development of microinjection technique in biomedicine field[J].Science&Technology Review,2010,28(20):97-100.
[5]LEE T M,KANG T G,YANG J S,et al.3D metal microstructure fabrication using a molten metal DoD inkjet system[C]//Solid-State Sensors,Actuators and Microsystems Conterence,2007,International IEEE,2007:1637-1640.
[6]黄菲,杨方,罗俊,等.均匀金属液滴喷射微制造技术的研究现状[J].机械科学与技术,2012,31(1):38-43.HUANG Fei,YANG Fang,LUO Jun,et al.Research status of uniform metal droplet spray for micro-manufacturing[J].Mechanical Science and Technology for Aerospace Engineering,2012,31(1):38-43.
[7]DEMIRCI U.Acoustic picoliter droplets for emerging applications in semiconductor industry and biotechnology[J].Journal of Microelectromechanical Systems,2006,15(4):957-966.
[8]SADEGHIAN H,HOJJAT Y,GHODSI M,et al.An approach to design and fabrication of a piezo-actuated microdroplet generator[J].The International Journal of Advanced Manufacturing Technology,2014,70(5-8):1091-1099.
[9]XIE D,ZHANG H,SHU X,et al.Multi-materials drop-on-demand inkjet technology based on pneumatic diaphragm actuator[J].Science China Technological Sciences,2010,53(6):1605-1611.
[10]李杨,齐乐华,罗俊,等.金属熔滴气动按需喷射特性试验研究[J].西安交通大学学报,2011,45(5):69-73.LI Yang,QI Lehua,LUO Jun,et al.Experimental study on characteristics of molten metal penumatic drop-on-demand ejection[J].Journal of Xi′an Jiaotong University,2011,45(5):69-73.
[11]FANG M,CHANDRA S,PARK C B.Building three-dimensional objects by deposition of molten metal droplets[J].Rapid Prototyping Journal,2008,14(1):44-52.