| 管形径向复合压电陶瓷超声换能器 |
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| 引用本文： | 刘世清,姚晔.管形径向复合压电陶瓷超声换能器[J].上海交通大学学报,2011,45(2):252-0256. |
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| 作者姓名： | 刘世清 姚晔 |
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| 作者单位： | （1．浙江师范大学 应用声学研究所，金华 321004；2．上海交通大学 械与动力工程学院，上海 200240）
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| 基金项目： | 国家自然科学基金资助项目(11074222); 浙江省自然科学基金项目资助(Y606238) |
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| 摘 要： | 对一种圆管形径向复合压电陶瓷超声换能器径向振动特性进行研究.该换能器由径向极化薄壁压电陶瓷短圆管与薄壁金属短圆管径向复合而成.基于弹性力学理论和机电类比原理，建立了换能器径向振动机电类比等效电路，并推导出其径向共振频率、反共振频率方程及有效机电耦合系数的解析式.实验加工了一些径向复合换能器样品，并对其径向共振频率及有效机电耦合系数进行了测试.结果表明，理论与实验测试结果相吻合.
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| 关 键 词： | 压电换能器 径向振动 等效电路 频率方程 |
| 收稿时间： | 2010-5-10 |
Investigation on Radial Composite Round Tube Piezoelectric Ceramic Ultrasonic Transducer |
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| LIU Shi-qing,YAO Ye.Investigation on Radial Composite Round Tube Piezoelectric Ceramic Ultrasonic Transducer[J].Journal of Shanghai Jiaotong University,2011,45(2):252-0256. |
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| Authors: | LIU Shi-qing YAO Ye |
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| Institution: | (1. Applied Acoustic Institiute, Zhejiang Normal University, Jinhua 321004, China; 2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240,China)
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| Abstract: | The radial vibration of a radial composite round tube piezoelectric ultrasonic transducer was studied.The transducer consists of an inner radially polarized short piezoelectric ceramic round tube and an outer short thin-walled metal prestressed tubular shell which are compounded in the radial direction.Based on the elastic dynamics theory and the electro-mechanical analogy,the equivalent circuit of the radial composite piezoelectric transducer is derived.The analysis formulae of the resonance frequency and ... |
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| Keywords: | piezoelectric transducer radial vibration equivalent circuit frequency equation |
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