Abstract
This paper describes the vibroacoustic coupling between the structural vibrations and internal sound fields of thin structures. In this study,a cylindrical structure with thin end plates is subjected to a harmonic point force at one of its ends.A natural frequency of the end plates is selected as the forcing frequency,causing the one end plate to vibrate in high-order mode.The resulting vibroacoustic coupling is then analyzed theoretically and experimentally by considering the dynamic behavior of the plates and the acoustic characteristics of the internal sound field as functions of the cylinder length and plate thickness. The theoretical results are validated experimentally through an excitation experiment using an experimental apparatus that emulates the analytical model.
