Radial vibration analysis for piezoceramic shell-stacked spherical transducer with thick walls
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Published:2024-02-01
Issue:3
Volume:33
Page:035002
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ISSN:0964-1726
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Container-title:Smart Materials and Structures
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language:
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Short-container-title:Smart Mater. Struct.
Author:
Tang YifanORCID,
Chen Cheng,
Tian Hua,
Lin Shuyu
Abstract
Abstract
With the development of ultrasonic transducers, spherical piezoelectric transducers have attracted tremendous attention in a variety of application fields due to their ability to resist higher pressures and produce omnidirectional radiation. However, the wall thickness of piezoceramic spherical shells is usually thin due to the limitations of polarization technology and operating voltage, leading to the limited vibration performance and power capacity of the spherical transducer. We present a piezoceramic shell-stacked spherical transducer (PSST) capable of addressing the problem of difficult excitation caused by the thick wall of the piezoceramic shell. The resulting device consists of a two-layered piezoceramic shell interposed between the inner and outer concentric spherical metal shells. By removing the equivalent mechanical transformers, a novel electromechanical equivalent circuit of the PSST is established to simplify the theoretical analysis of the designed PSST. The electromechanical characteristics of the resulting device are experimentally verified, and the measured results are in good agreement with the theoretical predictions and simulation results. Our design opens up possibilities for designing spherical transducers with high-vibration performance and may offer potential for a wide range of applications such as underwater detection and structural health monitoring.
Funder
Natural Science Basic Research Program of Shaanxi Province
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Young Talent Lifting Program of Xi ‘an Science and Technology Association in the Shaanxi Province of China
Subject
Electrical and Electronic Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics,Civil and Structural Engineering,Signal Processing