Numerical Results of Acoustic Radiation, Transmission and Reflection of Steel Plate in Water

摘要

Plots of acoustic power versus frequency, and acoustic pressure directivity at selected frequencies, are given for the separate cases of thin, thick and exact plate theories in which the excitation is a vertical time-harmonic point force; they illustrate the range of applicability of the approximate theories. Plots of acoustic power and pressure directivity are given for exact plate theory in which the excitation is a longitudinal force. Plots of pressure transmission and reflection coefficients are given for exact plate theory. Contour and perspective plots of pressure-frequency-angle data, obtained from exact theory, provide vivid illustrations of the acoustic properties of the plate. (Author)