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本文研究了一种由纵向振动夹心式压电超声换能器与弯曲圆盘组成的用于液体中超声处理的复合振动辐射器。推出了恢复合振动系统的共振频率设计方程，分析了各个振动模式的机电转换特性及其声波辐射特性，测量了振动系统的共振频率及其有效机电耦合系数。从实验及理论结果可以看出，振动系统的频率测试值与设计值基本符合。在一定的共振频率上，该振动系统具有最大的有效机电耦合系数，是一种很有前途的功率超声辐射器。
In this paper, a composite vibrating radiator for liquid ultrasonic treatment consisting of a longitudinal vibrating sandwiched piezoelectric ultrasonic transducer and a curved disk is studied. The resonant frequency design equations of the combined vibration system are introduced. The electromechanical conversion characteristics and acoustic radiation characteristics of each vibration mode are analyzed. The resonant frequency and effective electromechanical coupling coefficient of the vibration system are measured. As can be seen from the experimental and theoretical results, the frequency of vibration system test values and design values are basically in line. At a certain resonant frequency, the vibration system has the largest effective electromechanical coupling coefficient and is a promising power ultrasonic radiator.