1-3型压电复合材料性能及声场特性分析  

Properties and acoustic field analysis of Type 1-3 piezoelectric composites

作　　者：赵志钢 刘瑶 周扬 沈斌 ZHAO Zhigang;LIU Yao;ZHOU Yang;SHEN Bin(School of Mecha nical Engineering,North University of China,Taiyuan 030051,China;Precision Machining Research Center,Yangtze Delta Region Institute of Tsinghua University,Jiaxing 314000,China)

机构地区：[1]中北大学机械工程学院,太原030051 [2]浙江清华长三角研究院海纳精密加工中心,嘉兴314000

出　　处：《应用声学》2024年第6期1324-1333,共10页Journal of Applied Acoustics

基　　金：国家重点研发计划项目(2022YFC3005002);国家自然科学基金项目(51905498);浙江省自然科学基金资助项目(LY23E050002)。

摘　　要：1-3型压电复合材料以其优异的性能,被广泛应用于换能器的制造。该文基于切割-填充法制备实验和仿真方法,对复合材料压电柱不一致性以及其对声场的影响展开研究。在仿真中发现压电柱高度、长度和宽度不一致性均会对压电复合材料声场及谐振频率产生影响,声场整体朝一侧偏转,旁瓣也随之偏转,聚焦位置的声压减小6.5%左右,同时压电复合材料侧面产生杂波。在实验中发现压电柱谐振频率具有不一致性,而压电柱尺寸较大的复合材料阻抗曲线向右偏移。该文结合仿真与实验方法,建立压电柱不一致与复合材料阻抗和声场的联系,为复合材料制备质量和性能分析提供新方法。Type 1-3 piezoelectric composites are widely used in the manufacture of transducers because of their excellent properties.In this paper,based on the cut-and-fill method and simulation method,the inconsistency of composite piezoelectric column and its influence on the acousticfield are studied.In the simulation,it is found that the inconsistency of the height,length and width of the piezoelectric column will affect the soundfield and resonant frequency of the piezoelectric composite.The soundfield is deflected to one side,and the sidelobe is deflected accordingly.The sound pressure of the focusing position is reduced by about 6.5%,and the noise is generated on the side of the piezoelectric composite.In the experiments,it is found that the resonant frequency of the piezoelectric column is inconsistent,and the impedance curve of the composite with a large piezoelectric column size is shifted to the right.In this paper,the relationship between piezoelectric column inconsistency and the impedance and soundfield of composite materials is established by combining simulation and experimental methods,which provides a new method for the quality and property analysis of composite materials.

关 键 词：声学仿真 压电效应 1-3型压电复合材料 切割-填充法 

分 类 号：TB559[理学—物理] TP319[理学—声学]