记忆合金驱动无阀微泵技术的研究

发布时间：2018-07-04 22:55

本文选题：形状记忆合金 + 驱动器　；参考：《东北大学》2012年硕士论文

【摘要】：形状记忆合金具有功重比大、驱动能力强、占用空间小等特点,适合驱动某些微泵。本文以记忆合金和微泵为研究背景,提出了栅栏式记忆合金板的概念,用栅栏式记忆合金板为驱动器,驱动无阀微泵。论文在总结国内外相关研究成果的基础上做了以下工作。提出了栅栏式记忆合金板的概念,以形状记忆合金本构关系和梁的大挠度变形为依据,推导出栅栏式记忆合金板驱动器的本构模型,得到了记忆合金宏观应力、应变、和温度的本构关系。通过记忆合金特性相关参数的实验,得到了不同温度下弹性模量、应力影响系数、记忆合金相变温度等模型特性的数据。设计了检验栅栏式记忆合金本构模型的实验装置,此装置可以测得记忆合金温度和变形的关系。通过高速摄像和单片机控制得到的实验数据,评价已推导的模型。在此基础上通过仿真分析了风速对栅栏式记忆合金板的影响效率。在对无阀泵的研究中,论文对无阀泵的口型进行了改进,通过仿真分析了速度、压力和流量场,实现了无阀微泵效率的优化。
[Abstract]:Shape memory alloy (SMA) is suitable for driving some micropumps because of its high power to weight ratio, strong driving ability and small space occupation. In this paper, the concept of palisade memory alloy plate is put forward based on the memory alloy and micropump. The valveless micropump is driven by the palisade memory alloy plate. On the basis of summarizing the related research results at home and abroad, the thesis has done the following work. Based on the constitutive relation of shape memory alloy and the large deflection deformation of beam, the constitutive model of the bar memory alloy plate driver is derived, and the macroscopic stress and strain of the memory alloy are obtained. And temperature. Through the experiment of the parameters related to the properties of the memory alloy, the data of the elastic modulus, the influence coefficient of stress and the phase transition temperature of the memory alloy were obtained at different temperatures. An experimental device for testing the constitutive model of the palisade memory alloy is designed. The relationship between temperature and deformation of the alloy can be measured by this device. Based on the experimental data obtained by high speed camera and single chip computer control, the derived model is evaluated. On this basis, the effect of wind speed on the efficiency of the palisade memory alloy plate is analyzed by simulation. In the research of valveless pump, the orifice of valveless pump is improved, and the efficiency of valveless micro-pump is optimized by simulation and analysis of velocity, pressure and flow field.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TG139.6;TH134

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