Sound Transmission Loss of Multi-Layered Sound-Proof Material with Edges of Cut out Compressed
開口部端末を圧縮した積層防音材の音響透過損失
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20225214
- Paper/Info type
- Proceedings (Spring)
No.49-22
- Pages
- 1-6(Total 6 p)
- Date of publication
- May 2022
- Publisher
- JSAE
- Language
- Japanese
- Event
- 2022 JSAE Annual Congress (Spring)
Detailed Information
| Author(J) | 1) 山本 崇史, 2) 加藤 大輔 |
|---|---|
| Author(E) | 1) Takashi Yamamoto, 2) Daisuke Kato |
| Affiliation(J) | 1) 工学院大学, 2) Howa |
| Affiliation(E) | 1) Kogakuin University, 2) Howa |
| Abstract(J) | 自動車室内の静粛性確保のため用いられるダッシュサイレンサーには，ハーネスなどを通す開口部を設けなければならず，遮音性能低下の大きな要因となっている．本研究では，非通気膜を含む積層防音材構造について，音響透過損失を向上させることを目的に開口部端末を圧縮した影響を数値解析により検討した． Translation |
| Abstract(E) | Sound proof structure such as dash silencer is partially cut-out for wire-harnesses that are passed through from an engine compartment to a passenger compartment. In this paper, the edges of the cutouts are proposed to compress to improve sound transmission loss (STL). STL of the proposed structure is numerically compared with the conventional sound proof structure whose edges are opened up in the surrounding air. The effects of the number and the area of the structure are also investigated. Sound transmission loss is enhanced with the compressed edges of the cutouts in low and mid frequency range below 2 kHz. |
