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Numerical Study of Air-Borne Acoustic Field of Stepped-Plate High-Power Ultrasonic Transducers

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A numerical-experimental study of the displacements distribution and the radiated field of various (directional and focusing) flexural plate transducers is presented. The numerical method basically consists of calculating the distribution of displacements of the transducers by the finite element method by using the code ATILA while the corresponding radiated field is calculated by the boundary element method by means of the code EQI. In this way the near and far field of the transducers is calculated as well as their directivity pattern and vibration distribution. The obtained results are compared with experimental data. The good agreement obtained indicates that the numerical method used in this paper is a very useful tool for calculating the field of transducers and for the optimisation of their design.
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Document Type: Research Article

Publication date: November 1, 1998

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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