259 柔軟はりを対象とした音響パワーモードに関する研究

概要

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This paper considers the precise description of the acoustic power mode, the dominant factor in the structure-borne sound, which directly connects the vibration field and structural sound. Until quite recently, the control of structure-borne sound has been regarded as difficult task due to the complexity of the generation mechanism of the structure-borne sound, and hence having led researchers to a focus of attention on the control of radiated sound power. It is obvious that if a structure vibrates, the structural sound is radiated; if the structure stops vibrating completely, the sound also stops perfectly. The problem is, however, that the suppression of structural vibration does not necessarily guarantee the suppression of the structural sound. Therefore, with the aim to suppress the structure-borne sound effectively, the sensing and control of the acoustic power mode definitely rather than the conventional structural mode is essential. But only a fraction of the acoustic power mode has given. So then, It is necessary to clear the further property of the acoustic power mode and the power transfer matrix.
一般社団法人日本機械学会の論文
2000-09-01