書誌事項
- タイトル別名
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- Finite Element Analysis for Damping Properties of Sound-Proof Structures Having Solid Body, Porous Media and Air.
- コタイ タコウタイ クウキ カラ ナル ボウオン コウゾウ ノ ゲンスイ トクセイ ノ FEM カイセキ
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A numerical method is proposed to calculate damping properties for sound-proof structures involving solid body, porous media and air in two dimensional regions. Both effective density and bulk modulus have complex quantities to represent damped sound fields in the porous media. Particle displacements in the media are discretised using finite element method. For solid body, displacements are modeled using conventional finite elements including complex modulus of elasticity. Displacement vectors at common unknown varriables, are solved under coupled condition between solid body, porous media and air. Further, explicit expressions of modal loss factor for the mixed structures are derived using asymptotic method. The proposed methods yield appropriate results for some sample problems. Moreover, it is found that damping can be coupled in the mixed structures.
収録刊行物
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- 日本機械学会論文集C編
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日本機械学会論文集C編 69 (677), 34-41, 2003
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282681334122368
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- NII論文ID
- 110002378822
- 130004234609
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- NII書誌ID
- AN00187463
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- ISSN
- 18848354
- 03875024
- http://id.crossref.org/issn/03875024
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- HANDLE
- 10087/2783
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- NDL書誌ID
- 6446096
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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
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可