Numerical modeling of a free-flooded piezoelectric ring sonar transducer.
Tay, Tiong Beng
Baker, Steven R.
Wilson, Oscar B.
Pieper, Ron J.
MetadataShow full item record
A two-dimensional finite element model of a low frequency, free- flooded piezoelectric thin ring sonar transducer was developed for use with the ATILA code. Effective material properties for the ring were determined from in-air modal analyses using ATILA. These were adjusted to obtain the closest agreement between the calculated ring resonance frequency and coupling coefficient and measured data supplied by the manufacturer. In addition, equations for the electrical admittance for this transducer in air were developed based on an analytical approach published by Hongzhang Wang (J. Acoust. Soc. Am. 79, 164-176 (1986)). A Mat lab program was written to implement these equations and to calculate various electromechanical network parameters. The calculated values agreed with measured values to within 5 percent . An in-water harmonic analysis, in which the transmitting voltage response and the directivity pattern are computed, was performed using the ATILA code. In general, results obtained using the finite element model and manufacturer's measured values agree within 10 percent. The effects of changes in material properties on acoustic performance of the transducer were investigated; the results are discussed.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Baker, Steven R.; Ellsworth, John Merle (Monterey, California. Naval Postgraduate School, 1991-10); NPS-PH-92-002The achievable gain in the radiation resistance and directivity of a low-frequency underwater transducer due to the presence of an array of sympathetic resonators has been analyzed. The resonators were all taken to be air ...
Ellsworth, John Merle (Monterey, California: Naval Postgraduate School, 1990-09);The achievable gain in the radiation resistance and directivity of a low frequency underwater transducer due to the presence of an array of sympathetic resonators was analyzed. The resonators were all taken to be air ...
Whitfield, Martin L.; Brutzman, Donald P. (The United States of America as represented by the Secretary of the Navy, Washington, DC (US), 2003-07-29);A system for producing a decoy to enable a target to avoid a homing torpedo that uses a sonar ping signal for homing in on the target comprises a transducer that operates in a receive mode in which it receives sonar signals ...