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首页> 外文期刊>Smart Materials & Structures >A 2D dual-mode composite ultrasonic transducer excited by a single piezoceramic stack
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A 2D dual-mode composite ultrasonic transducer excited by a single piezoceramic stack

机译：由单个压电陶瓷堆叠激发的2D双模复合超声波换能器

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摘要

A 2D composite ultrasonic transducer with two resonance modes is proposed by using a central coupling metal block, a piezoceramic stack and four outer metal cylinders. With the introduction of the dual-mode equivalent mechanical coupling coefficient and the 2D longitudinal force transform coefficient, a novel equivalent circuit model is developed for the design and analysis of the 2D coupled vibration of the transducer. After verifying the proposed equivalent circuit model with the FE method and the corresponding experiments, the vibration characteristics of the proposed transducer are investigated by using the equivalent circuit mode, the FE methods, and the experiments. The results demonstrate that the proposed transducer has the advantage of generating 2D ultrasonic radiation with two different fundamental resonance modes, which is useful in some new ultrasonic applications such as ultrasonic emulsification, ultrasonic defoaming and ultrasonic sonochemistry where multi-frequency and multidimensional sound radiation is needed.
机译：通过使用中央耦合金属块，压电陶瓷堆叠和四个外金属缸提出了具有两个共振模式的2D复合超声换能器。随着双模等效机械耦合系数和2D纵向力变换系数的引入，开发了一种新的等效电路模型，用于设计和分析换能器的2D耦合振动。在用Fe方法和相应的实验验证所提出的等效电路模型之后，通过使用等效电路模式，FE方法和实验来研究所提出的换能器的振动特性。结果表明，所提出的换能器具有以两种不同的基本共振模式产生2D超声波辐射的优点，这对于一些新的超声波应用是有用的，例如需要多频和多维声辐射的超声波乳化，超声波消泡和超声波化学。 。

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