書誌事項
- タイトル別名
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- Analysis on the Shielding Effects of Inversed-L Noise Barriers against Bogie Noise by Finite Difference Time-Domain Method
- サブンホウ オ モチイタ ダイシャ ソウオン ニ タイスル ギャク Lガタ ボウオンヘキ ノ シャヘイ コウカ ノ カイセキ
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Finite difference time-domain method (FDTDM) was applied to examine the method for increasing the shielding effect of an inverted-L barrier against the bogie noise of Shinkansen. A numerical calculation by FDTDM was carried out assuming that the radiated sound from bogie parts propagated as a two-dimensional traveling wave. The results indicate that installing absorbing material to the inner side of the inverted-L barrier shows the maximum improvement effect and the attachment of absorbing object of 0.3m thickness on the top panel of the inverted-L barrier is more effective than the attachment of reflective straight barrier of 1m height on the same position. The results also suggest the potential acoustic energy around the edge part of barriers play an important roll in the shielding effect of barriers. These results obtained by FDTDM were confirmed by a three-dimensional 1/25 scale model experiment, and moreover by the field measurement carried out in the actual commercial line of the Tohoku Shinkansen.
収録刊行物
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- 騒音制御
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騒音制御 31 (4), 322-332, 2007
公益社団法人 日本騒音制御工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679744296192
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- NII論文ID
- 10019736122
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- NII書誌ID
- AN00361298
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- ISSN
- 18837506
- 03868761
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- NDL書誌ID
- 8916334
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可