| 阎向宏,张福成.纵－扭复合振动夹心式压电超声换能器的研究[J].声学技术,1995,(3):119~121 |
| 纵－扭复合振动夹心式压电超声换能器的研究 |
| The primary study of the pre-stressed piezoelectric longitudinal-torsional composite transducer |
| 投稿时间：1994-11-14 修订日期：1994-12-28 |
| DOI： |
| 中文关键词: 纵振动 扭转振动 复合振动换能器 复合振动 |
| 英文关键词: longitudinal vibration fundamental frequency torsional vibration composite transducer composite vibration |
| 基金项目: |
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| 中文摘要: |
| 本文从纵振动和扭转振动的波动方程出发,结合复合振动换能器各组成部分在一维条件下,纵振动和扭转振动的等效网络,以一维声传输线理论为基础,推导出了复合振动换能器所满足的纵振动和扭转振动共振频率方程,通过合理地选择变截面杆的弯延指数β,从而设计出了同一长度下,纵振动的基波和扭转振动的二次谐波可以共振的纵-扭复合振动换能器,并对影响弯延指数β的因素进行了初步的探讨。实验结果表明,理论计算与实验结果基本符合。 |
| 英文摘要: |
| In this paper, according to the wave equation of the longitudinal and torsional vibration, on the base of the one-dimentional transmission line theory,and through analysising the composite transducers every part's equivalent net, we gave out the longitudinal's and torsional's resonant frequency equation. If we choose the suitable parameter β of the exponnent bar, we can design a composite transducer that the longitudinal vibration fundamental frequency can coincide with the second harmonics of the torsional vibration in the same length. We also studied the parameter whch affecting parameter β. The experiment results show that the theoretical computation is in agreement with the experimental results. |
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