754 両端板に加振力を受ける円筒構造の内部音響特性(騒音制御技術,OS-4 音響・振動,総合テーマ「伝統を,未来へ!」)
詳細
Vibroacoustic coupling phenomena occur in a variety of different situations and are generally studied with the goal of controlling noise. We consider a cylindrical structure with thin plates at both ends and investigate the coupling between the plate vibrations and the internal sound field when external periodic forces are applied to respective end plates. In comparison between characteristics of the both systems, it is clarified that vibroacoustic coupling is effective in increasing acoustic energy and the phase difference depends greatly on the acoustic mode, which contributes the formation of the sound field.
