Sound Radiation of Submerged and Fluid-Filled Spherical Shell under Harmonic External Excitation

A vibroacoustical problem for a thin elastic spherical shell that suspended in and filled with compressible ideal fluid medium is presented in this paper. The shell is excited harmonically by the point force. Based on motion differential equations of spherical shell and applying the governing equations of acoustic medium, a semi-analytic solution is founded for the vibration and sound pressure radiation of the shell. Acoustic pressure on the shell interfaces and radial and tangential displacement of the shell and also far field sound pressure are determined and plotted. Sound pressure of internal medium is also investigated and for several excitations is plotted.

کلیدواژه ها:

Acoustics ، Vibration ، Spherical Shell ، Sound Radiation