Archives of Acoustics, 23, 2, pp. 291-306, 1998

Finite element method (FEM) and impulse response method (IRM) analysis of circular ultrasonic transducers

P. KIEŁCZYŃSKI
Institute of Fundamental Technological Research, Polish Academy of Sciences
Poland

Circular transducers with axially-symmetric vibrational profiles were considered. Vibrational patterns of transducer structures were calculated using the Finite Element Method. Analytical formulas for the impulse response function h(X, t) for circular transducers and vibration velocity profiles, approximated by linear and quadratic polynomials, on the finite element (annulus) were established. These formulas enable accurate calculations of acoustic field distributions in near and far-field, respectively. Calculated profiles of an acoustic field were compared with the experimental data.
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References

A.J. RUDGERS, Application of a Neumann-series method to two problems in acoustic radiation theory that are formulated in terms of Green’s functions, JASA, 79, 5, 1211-1222 (1986).

A.F. SEYBERT, T.W. Wu, Modified Helmholtz integral equation for bodies sitting on an infinite plane, JASA, 85, 1, 19-23 (1989).

R. LERCH, Finite element analysis of piezoelectric transducers, IEEE Ultrasonic Symposium Proc., pp. 643-653 (1988).

R. LERCH, Finite element modelling of acoustic radiation from piezoelectric phased array antennas, IEEE Ultrasonic Symposium Proc., pp. 763-767 (1990).