尾鳍式压电泵尾鳍形状优化、模拟及实验  

Caudal Fin Shape Optimization,Simulation and Experimental Study on Caudal Fin Piezoelectric Pump

作　　者：胡笑奇 李垚 纪晶[2] 胡彩旗[2] 赵伟 HU Xiaoqi;LI Yao;JI Jing;HU Caiqi;ZHAO Wei(College of Mechanical and Electrical Engineering,Zaozhuang University Zaozhuang,277160,China;College of Mechanical and Electrical Engineering,Qingdao Agricultural University Qingdao,266109,China)

机构地区：[1]枣庄学院机电工程学院,枣庄277160 [2]青岛农业大学机电工程学院,青岛266109

出　　处：《振动．测试与诊断》2024年第3期560-565,622,623,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(31971801,51475221);山东省自然科学基金资助项目(ZR2020ME252,ZR2020ME250)。

摘　　要：尾鳍仿生结构是形成尾鳍式压电泵泵送效应的关键部件,受到多种生物鱼尾结构的启发,提出了内三角形、弯月形、扇形和梯形等形状的尾鳍,并对其进行研究和对比。首先,在ANSYS Workbench软件平台对振子进行了振动分析,并基于响应面法优化了尾鳍形状参数;其次,基于COMSOL软件进行了振子在泵腔内的流固耦合分析,模拟了泵出口端的泵流量;最后,进行了流量测试实验,绘制了泵的流量-频率曲线。结果表明:优化后的上述4种形状尾鳍振子的振幅依次提高了233%,100%,78%和138%;4种尾鳍振子的泵流量比优化前分别提高了43%,20%,-27%和87%;实测流量分别提高了48.7%,20.6%,-21.2%和101.5%,变化趋势和模拟值趋同。The caudal-fin bionic structure is the key component to form the pump effect of the caudal-fin-type piezoelectric pump.Inspired by a variety of biological fishtail structures,the inner triangle-shaped,meniscusshaped,fan-shaped,and trapezoidal-shaped caudal-fins are proposed,and their research and comparison are carried out.The vibration of the swing vibrator is analyzed on the platform of ANSYS Workbench software,and the shape parameters of the caudal-fin are optimized based on the response surface method.After optimization,the amplitudes of the four kinds of caudal-fin vibrators are increased by 233%,100%,78%and 138%respectively.Based on COMSOL software,the fluid-solid coupling analysis of the vibrator in the pump chamber is conducted,and the pump flow rate at the outlet of the pump is simulated.Compared with the original structure,the pump flow rate of the four kinds of tail fin vibrators are increased by 43%,20%,-27%,and 87%,respectively.Finally,the flow rate test experiment is accomplished and the flow-frequency curve of the pump is drawn,which is improved by 48.7%,20.6%,-21.2%,and 101.5%respectively compared with the measured flow of the pump before optimization,and the variation trend is similar to the simulation value.This study will have a certain reference value for structural optimization and performance improvement of the pump.

关 键 词：压电 无阀泵 仿生结构 摆动振子 

分 类 号：TH35[机械工程—机械制造及自动化] TH38