振動するバッフルのないはりからの音の放射に及ぼす板厚の効果

概要

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In this paper, the effect of plate thickness upon the sound radiation from the vibrating free-free beams without baffle is investigated. The relation between the acceleration amplitude and the radiated sound pressure of unbaffled beams is theoretically analyzed. In this analysis, the mechanism of sound radiation from a vibrating beam without baffle is assumed to be equivalent to that from two pulsating spheres in arraying to longitudinal direction that have a phase difference of 180゜and the same amplitude as the beam surface. The analytic results are verified by experiments. As a result of many considerations, the effects of the plate thickness upon sound radiation from vibrating unbaffled beams are cleared. When the results of this analysis are applied to the damping treatment beams, an agreement between the experimental results and the numerical results is obtained.
社団法人日本音響学会の論文
1984-05-01