Research on Volume Array Based on Curved Disk Transducers

Abstract A curved disk transducer with a dual stack structure with a resonant frequency of 800Hz is used as the array element, and the mutual radiation effect between the transducer elements is utilized to form a densely arranged volume array. Based on the formation structure, establish corresponding finite element models in COMSOL software to simulate and analyse the acoustic performance of different volume arrays. Finally, prototype production and array acoustic performance testing were conducted, and the measured data basically matched the simulation results. The results show that compared to a single transducer, utilizing the mutual radiation effect between the transducer elements can effectively reduce the resonant frequency of the volumetric array and expand its operating bandwidth, while also improving the maximum sound source level after formation. In addition, with a reasonable number of array elements, keeping the spacing between the elements constant, the more elements there are, the lower the resonant frequency of the volumetric array, the smaller the quality factor, and the higher the emission voltage response.