構造・音場連成解析手法の開発に関する研究 : 高次と低次の周波数帯域を省略する手法の提案

概要

論文の詳細を見る
This paper proposes the structural-acoustic coupled analytical method. The special feature of this method is that the structural vibration is approximated by the superposition of the vibration modes which are included in the required frequency band, and the truncated higher-and lower-frequency band are compensated by the residual stiffness and mass, respectively. As a numerical example, a flexible rectangular prism model is used and the sound pressure in the model is calculated using the proposed method. It is shown that the calculated results agree with the exact ones which are obtained by using the full frequency band, and computer storage and calculation time are saved. As an application of the proposed method, simple acoustic control is carried out numerically. It is shown that the steady-state sound pressure at a certain point can be controlled using the secondary sound source operated with the adjusted signal based on the transfer function in the acoustic field.
一般社団法人日本機械学会の論文
1995-05-25