【作者】 张志宇；

【导师】 吴博达；

【作者基本信息】 吉林大学 ， 机械制造及其自动化， 2006， 硕士

【摘要】 压电泵是以压电陶瓷元件作为换能器的新型流体传输装置,是一种性能优良的智能材料驱动器。本文根据薄板振动理论,建立了复合压电振子的数学模型,计算了复合压电振子变形引起的体积变化量和产生的压力;建立了复合压电振子的有限元仿真模型,分析了复合压电振子的静动态特性;通过实验测试了复合压电振子的静动态特性,验证了理论计算和仿真分析的正确性。提出了大粘度压电泵的概念,将粘性流体动力学基础理论与压电学、振动学以及压电泵结构设计基础理论相结合,通过数学解析计算和ANSYS有限元仿真相结合的方法,对压电泵在输送不同粘度液体时液体粘性的影响规律进行了理论分析,得出了压电泵流场压力损失的计算公式;对单腔体有阀压电泵的内部流场进行了数值模拟,得到了泵腔内的流动特性,分析了液体粘度对泵腔内压力分布和流体流速的影响。通过大量的单因素实验,详细研究了压电泵的各种结构参数对其输出性能的影响规律,得出了压电泵在输送大粘度液体时的流量系数和压力系数,对获得的实验数据进行了分析和讨论。在此基础上对现有压电泵进行了优化设计,制作了适合大粘度液体的压电泵样机,改善了压电泵在输送大粘度液体时的工作特性,进行了相关的实验测试与分析,获得了一批有实际借鉴意义的数据。本文的工作对今后研究和设计大粘度压电泵具有重要的参考价值。更多还原

【Abstract】 Piezoelectric pump is a kind of new transmission fluid device driven by the piezoelectric transducer components. Piezoelectirc pump is also a new kind of superior smart materials actuator. It is a good try and a profound innovation that using piezoelectric ceramic materials as fluid pump actuator driving components. Along with the continuous deepening researches on the piezoelectric pump, the liquid media has not only involved in water. In some conditions, the piezoelectric pump was used to transmit the high viscosity liquid. As everyone knows, the different fluid has their different viscosity. How would piezoelectric pump work under different viscosity; what are the transmission characteristics of different viscosity liquids; how is the law and how to design the piezoelectric pump prototype using for pumping the high viscosity liquid. These are precisely the issues discussed in this paper. The full dissertation is divided into seven chapters, mainly as follows:1. PrefaceIn recent decades, the study on the piezoelectric pump has transfored from the structure and principle to the market-oriented direction. Nowadays, the research and development trends of piezoelectric pump are roughly two directions: the one is to high-pressure, large piezoelectric pump flow direction; the other is to the size miniaturization, less power consumption, high output accuracy direction. After more than 20 years development, piezoelectric pump has been coming out of the laboratory and gradually applied to practical workplace with the bright market demand prospects. Compared with the traditional pump, piezoelectric pump has many unparalleled advantages: precision micro flow control, no magnetic更多还原