線路構造物の衝撃荷重による振動騒音解析
書誌事項
- タイトル別名
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- Dynamic and Acoustic Analyses to Impact Load on Railway Structure
抄録
In this paper, an effective numerical method to solve a transient dynamic and acoustic problem for railway structures due to the impact forces is presented. After the dynamic response of the structure is obtained by FEM and the velocity response of the surface of the structure is transformed to the frequency domain, the sound pressure in the air outside the structure is obtained by BEM using the velocity boundary condition at each frequency. The transient sound pressure at the arbitrary points outside the structure is obtained by the superposition of the sound pressure in the frequency domain. In the superposition, the inadequate higher frequency decided from the element size of boundary mesh is omitted to get a reasonable solution and save computation time. The submodel in the whole structure is employed to get a transient acoustic solution effectively for an actual railway structure. Based on the present method, a transient dynamic and acoustic analysis program, ASA/ACOUSTICS, has been developed. Numerical examples are demonstrated.
収録刊行物
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- 日本計算工学会論文集
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日本計算工学会論文集 2004 (0), 20040019-20040019, 2004
一般社団法人 日本計算工学会
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詳細情報 詳細情報について
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- CRID
- 1390006994048622976
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- NII論文ID
- 130008056083
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- ISSN
- 13478826
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可