Abstract
The vibroacoustic coupling between a finite circular cylindrical shell closed at each end by a piece of circular plate and its enclosed cavity is analyzed in this paper by using a new method, called the covering-domain method. The covering-domain method, which transforms the calculation of the scattering sound field of a complicated-shaped close cavity to that of a series of simply regular-shaped close shells such as close spherical shell and infinite cylindrical shell, is applied to calculating the scattering sound field of the plate-ended cylindrical shell structure. So we can predict radiated sound pressure of the composite elastic structure excited by an external force by using the acoustical reciprocity theorem. The new method expands practical application of the reciprocity theorem. It is verified to be valid by a corresponding test.
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