Impact sound radiated from a viscoelastically supported circular plate

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概要

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• The impact noise radiated from a circular plate which is struck by a ball is studied experimentally and theoretically. The impact sound of a plate viscoelastically supported at its edges is compared with that of a clamped plate. The followings are found: The impact sound of the viscoelastic support consists of the initial peak and the free vibration sound, and this is similar to the clamp condition. The viscoelastic support is effective to reduce the maximum level of the impact sound, When the plate is thin in comparison with its diameter or the level of the free vibration sound is sufficiently higher than that of the initial peak. Further there is an optimal value of the stiffness of the viscoelastic material to minimize the impact sound. However the viscoelastic support is not effective to reduce the maximum level of the impact sound, when the plate is thick in comparison with its diameter or there is little level difference between the initial peak and the free vibration sound.

• 社団法人日本音響学会の論文

著者

• Nakai Mikio

  Department Of Computer Science School Of Electrical And Computer Engineering National Defense Academ

• Nakai Mikio

  Department Of Precision Mechanics Faculty Of Engineering Kyoto University

• Takahagi Toshio

  Junior College of Osaka Industrial University

• Takahagi T

  Junior College Osaka Sangyo University

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• Impact sound radiated from a viscoelastically supported circular plate

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