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| 題 名 | 利用修正波導法預估船艛結構噪音之傳遞=Predicting the Propagation of Structural Borne Sound Using Modified Wave Guide Model |
|---|---|
| 作 者 | 許榮均; 張建仁; 劉洪文; | 書刊名 | 中國造船暨輪機工程學刊 |
| 卷 期 | 16:3 1997.08[民86.08] |
| 頁 次 | 頁11-22 |
| 分類號 | 444.1 |
| 關鍵詞 | 波導法; 船艛; 音壓位準; 邊界元素法; Wave guide model; Superstructure; Sound pressure level; Boundary element method; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本文利用修正後的波導法先求得一均勻剖面船艛模形結構,底板之彎矩波振勤傳遞的模式,並進一步導得船艛結構側扳的振動速度,並應用邊界元素法預測由上下底板與側板振動速度所引起的船艛艙內的音壓,而上述所預測的振動噪音量皆與模型實驗結果比較。再者,文中更進一步將振動速度與音壓預測的理論模式應用在非均勻剖面之船艛結構模型。所得的結果初步印證,以修正後波導法預測艙壁振動並輔以邊界元素法來預測結構振動所造成之音壓,為可行的方法。 |
| 英文摘要 | In this paper, the wave guide model has been modified to predict the level of vibration transmitted to the bottom plate of the superstructure from the vibrating source. Also the prediction model for the vibration of side plate is derived. With the prediction of the vibration level known, the boundary element method is used to corporate the vibration velocity to generate the prediction of sound pressure level inside the superstructure. The theoretical predictions and experiments on a uniform structural model were preformed and compared. Furthermore, the theory and experiments were also applied to a nonuniform structural model. The results show that this proposed procedure for predicting sound pressure level inside the superstructure is a feasible one. |
本系統中英文摘要資訊取自各篇刊載內容。