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<p>The ultrasonic radiator is a green technology with great potential for various applications, aiming to induce temporary or permanent changes in different media by propagating high-intensity acoustic waves through air or multi-phasic materials. The efficacy of a proper ultrasonic radiator system heavily relies on its design and analysis. Therefore, the present paper seeks to design and simulate a high-power ultrasonic radiator using Finite Element Modelling (FEM) to generate acoustic waves in the air. The modal analysis of the radiator is conducted using ANSYS Workbench software, followed by the study of wave propagation patterns in the air using COMSOL. Subsequently, the ultrasonic radiator is fabricated, and a series of experimental tests, including impedance analysis, vibration amplitude, and sound pressure measurement, are carried out. The results reveal the reasonable accuracy of the modal design in achieving a frequency near 20&#xa0;kHz and demonstrate the modal interaction of the untuned frequencies. The vibration amplitude and acoustic field values determined during the experiments are found to align with the simulations.</p>

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Design a Stepped Circular Ultrasonic Radiator: Modal and Acoustic Field Analysis

  • 期刊论文

  • 发表日期：

    2025年11月24日

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  • Ariana Akbari,
  • Rezvan Abedini

摘要

The ultrasonic radiator is a green technology with great potential for various applications, aiming to induce temporary or permanent changes in different media by propagating high-intensity acoustic waves through air or multi-phasic materials. The efficacy of a proper ultrasonic radiator system heavily relies on its design and analysis. Therefore, the present paper seeks to design and simulate a high-power ultrasonic radiator using Finite Element Modelling (FEM) to generate acoustic waves in the air. The modal analysis of the radiator is conducted using ANSYS Workbench software, followed by the study of wave propagation patterns in the air using COMSOL. Subsequently, the ultrasonic radiator is fabricated, and a series of experimental tests, including impedance analysis, vibration amplitude, and sound pressure measurement, are carried out. The results reveal the reasonable accuracy of the modal design in achieving a frequency near 20 kHz and demonstrate the modal interaction of the untuned frequencies. The vibration amplitude and acoustic field values determined during the experiments are found to align with the simulations.