Study on Sound Absorption Capacity of Light-Weight Porous Structure and its Improvement
軽量ポーラス構造の吸音特性とその向上に関する研究
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20216103
- Paper/Info type
- Proceedings (Autumn)
No.103-21
- Pages
- 1-4(Total 4 p)
- Date of publication
- Oct 2021
- Publisher
- JSAE
- Language
- Japanese
- Event
- 2021 JSAE Annual Congress (Autumn) [Online]
Detailed Information
| Author(J) | 1) 芝 剛, 2) 牛島 邦晴, 3) 山本 崇史 |
|---|---|
| Author(E) | 1) Takeshi Shiba, 2) Kuniharu Ushijima, 3) Takashi Yamamoto |
| Affiliation(J) | 1) 東京理科大学, 2) 東京理科大学, 3) 工学院大学 |
| Affiliation(E) | 1) Tokyo University of Science, 2) Tokyo University of Science, 3) Kogakuin University |
| Abstract(J) | 本研究では，いくつかの周期ポーラス構造に対して均質化法を用いた吸音特性の評価を行った．これまでに発泡フォーム材や繊維材料の吸音特性評価は広く行われているが，周期ポーラス構造の研究例は少ない．そこで高剛性かつ高吸音性能を有する構造を提案し，Biotの理論も活用しつつその評価と性能向上の手法を検討した． Translation |
| Abstract(E) | In this study, sound absorption capacities of porous structures with partially closed walls have been investigated by using homogenization method. In our previous study, the sound absorption properties of a structure based on the BCC lattice structure were evaluated. Following the study, additional several types of unit-cell topologies were modelled and their sound absorption coefficient and structural stiffness were calculated and compared with each other. These structures have great potential to absorb sound sufficiently as well as possessing high structural stiffness. In addition, analytical estimation of the absorption coefficient based on the Biot's theory were discussed. |
