| 气介式功率超声复合换能器的声辐射特性研究 |
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| 引用本文： | 林书玉,张光斌.气介式功率超声复合换能器的声辐射特性研究[J].声学技术,2001,20(1):13-17. |
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| 作者姓名： | 林书玉 张光斌 |
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| 作者单位： | 陕西师范大学应用声学研究所, |
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| 摘 要： | 本文对气介式功率超声复合换能器的辐射声场进行了理论计算并与实验结果进行了对比。该复合换能器由夹心式纵向振动半波长换能器及弯曲振动的薄圆盘组成。从理论上推出了弯曲振动辐射圆盘在不同边界条件下的辐射声场分布及其共振频率方程。理论分析结果表明，固定边界弯曲振动圆盘辐射声场的指向性最佳，并且指向性的理论计算结果与实验结果符合很好。
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| 关 键 词： | 弯曲振动 指向性 辐射声场 气介式 超声换能器 |
| 文章编号： | 1000-3630(2001)01-0013-05 |
| 收稿时间： | 2000/1/20 0:00:00 |
| 修稿时间： | 2000/3/13 0:00:00 |
Study on the radiation acoustic field characteristics of air-coupled high power compound transducers in flexural vibration |
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| LIN Shu-yu and ZHANG Guang-bin.Study on the radiation acoustic field characteristics of air-coupled high power compound transducers in flexural vibration[J].Technical Acoustics,2001,20(1):13-17. |
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| Authors: | LIN Shu-yu and ZHANG Guang-bin |
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| Affiliation: | Applied Acoustics Institute;Shanxi Normal University, Xi''an 710062, China;Applied Acoustics Institute;Shanxi Normal University, Xi''an 710062, China |
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| Abstract: | The radiated acoustic field of air coupled high power compound transducers in flexural vibration is studied.The compound transducer is composed of the sandwich vibrator in longitudinal vibration and the circular thin plate in flexural vibration.The acoustic field distributions and the resonance frequncy equations of the compound transducer in different boundary conditions are derived.It is shown theoretically that the acoustic field directivity of the transducer in clamped boundary condition is the best and the calculated acoustic field directivity is in good agreement with the measured results. |
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| Keywords: | air-coupled transducer flexural vibration directivity radiated acoustic field |
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