Estimation of Noise Transmission Level Through Bolted Plate by Structural-Acoustic Analysis
| Autor: | Kyohei Hirai, Seiichirou Suzuki, Seiji Iwasaki, Toshikazu Nagata, Hiroyuki Kimura |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Transmission loss Stiffness Structural engineering Edge (geometry) Industrial and Manufacturing Engineering Finite element method Vibration Noise Transmission (telecommunications) Mechanics of Materials medicine medicine.symptom business Transmissibility (structural dynamics) |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 65:2302-2307 |
| ISSN: | 1884-8354 0387-5024 |
| Popis: | In this paper, the calculation method is presented for estimating the transmission level through a bolted plate, utilizing a coupled acoustic structural analysis of Finite Element Method. And the calculation method is presented for estimating the transmission level by mass spring model which is equivalent with circular plate. In a flexible panel its own sound radiation, caused by the sound induced vibration, often increases its transmissibility significantly. Presented modeling technique incorporates the sound radiation and the conventional Transmission Loss for the better estimation of sound through a panel. Also the rotational stiffness of the bolts are included for the accurate finite element modeling of a flexible plate. As a numerical example, a circular plate with bolted edge is investigated, and the calculated transrnission level shows good agreement with the measured result. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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