The acoustic radiation efficiency of rectangular panels

Abstract

The acoustic radiation efficiency σ of a rectangular panel that undergoes time-harmonic transverse oscillations with sinusoidal mode shapes is estimated when the acoustic wavenumber and the plate wavenumber components are large. The results confirm that σ has different asymptotic forms in different regions of plate wavenumber space. Results are given for each region, together with transition formulae near the various connecting boundaries. Some earlier results are confirmed, modified and extended.