遮音箱から放射される固体伝ぱ音の音圧の推定 : 二点加振の場合

概要

論文の詳細を見る
A method of estimating the sound pressure of structureborne sound included in noise radiated by an enclosure housing a machine that produces both noise and vibration is proposed. In this method, estimation is carried out without any change in the condition of installation of the machine using accelerations measured at the mounting points when the machine is in operation and frequency-response functions determined when the machine stops its operation. First, the theory of this method is briefly introduced; here it is assumed that the accelerations caused by the sound pressure of the noise emitted by the machine are negligible. Then this method is tested using an experimental setup in which the enclosure receives exciting forces of the machine at two connection points. It is shown that the estimated results agree well with the measured results. Finally, the limit of the validity of the above assumption is discussed.
1991-05-25