Research on the excitation modes of PZT element in bending cylindrical transducers

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI:10.1109/SPAWDA.2011.6167250

Ting-hai Cheng, Xiang-dong Guo, Gang Bao

{"title":"Research on the excitation modes of PZT element in bending cylindrical transducers","authors":"Ting-hai Cheng, Xiang-dong Guo, Gang Bao","doi":"10.1109/SPAWDA.2011.6167250","DOIUrl":null,"url":null,"abstract":"The PZT element acts as a core component which transforms the input electric energy to output mechanical energy in ultrasonic transducer. So the excitation modes of PZT element have an important influence on the characteristics of transducer. The force factor formulas of cylindrical transducers based on the bending vibration mode are deduced in theory and the excitation modes of PZT elements in bending cylindrical transducers were investigated. In detail, the influence of distributing positions and dimensions of PZT plates on the output performance of transducer were discussed and simulated by FEM. It indicated that disposing the PZT plates on the peak of strain curve for the bending vibration mode is the optimal method to excite the transducer. The total length of PZT element should not exceed the distance of two vibration nodes. For the bending cylindrical transducer bonded with PZT plates, increasing the thickness of each PZT plate is propitious to enhance the output characteristics of this type transducer. Whereas, the thickness of each PZT plate should be decreased to achieve an excellent performance for the transducer with a sandwich structure.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPAWDA.2011.6167250","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 2

Abstract

The PZT element acts as a core component which transforms the input electric energy to output mechanical energy in ultrasonic transducer. So the excitation modes of PZT element have an important influence on the characteristics of transducer. The force factor formulas of cylindrical transducers based on the bending vibration mode are deduced in theory and the excitation modes of PZT elements in bending cylindrical transducers were investigated. In detail, the influence of distributing positions and dimensions of PZT plates on the output performance of transducer were discussed and simulated by FEM. It indicated that disposing the PZT plates on the peak of strain curve for the bending vibration mode is the optimal method to excite the transducer. The total length of PZT element should not exceed the distance of two vibration nodes. For the bending cylindrical transducer bonded with PZT plates, increasing the thickness of each PZT plate is propitious to enhance the output characteristics of this type transducer. Whereas, the thickness of each PZT plate should be decreased to achieve an excellent performance for the transducer with a sandwich structure.

查看原文本刊更多论文

弯曲圆柱形换能器中PZT元件激励模式的研究

压电陶瓷元件是超声换能器中将输入电能转化为输出机械能的核心部件。因此PZT元件的激励方式对换能器的性能有重要的影响。从理论上推导了基于弯曲振动模态的圆柱形换能器的力因子公式，并研究了弯曲圆柱形换能器中压电陶瓷元件的激励模态。详细讨论了压电陶瓷板的分布位置和尺寸对换能器输出性能的影响，并用有限元方法进行了仿真。结果表明，在弯曲振动模式下，将压电陶瓷板置于应变曲线的峰值位置是激发换能器的最佳方法。PZT单元的总长度不应超过两个振动节点的距离。对于结合PZT板的弯曲圆柱形换能器，增加每块PZT板的厚度有利于提高该换能器的输出特性。然而，对于夹层结构的换能器，每块PZT板的厚度应该减小，以获得优异的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)

自引率

0.00%

发文量