Dynamics & Design Conference
Online ISSN : 2424-2993
セッションID: 310
会議情報
310 不規則衝撃加振される薄肉構造物の凹凸付加による音響放射パワーの低減
森川 広一倉本 吉和岩附 信行長澤 正佳
著者情報
会議録・要旨集 フリー

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抄録
This paper describes a noise reduction design of random impacted structure like a coin storage box of a coin counting machine. The sound power radiated from the box is estimated based on probabilistic model of random impact forces. The integrated sound power in frequency domain is used as an index for an evaluation of sound reduction. In this structural modification, straight dimples are added to the box so as the dimples cross antinodes of the distinguished mode of sound power. As a result of sound power measurement, it is confirmed that the proposed method is applicable to noise reduction design.
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© 2007 一般社団法人 日本機械学会
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