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題 名 | 矩形平板受液體作用下之振動及聲輻射場=Vibration Characteristics and Acoustic Radiation of Fluid Embedded Plate |
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作 者 | 宋家驥; | 書刊名 | 中華民國音響學刊 |
卷 期 | 5:2 1998.12[民87.12] |
頁 次 | 頁43-72 |
分類號 | 440.13 |
關鍵詞 | 矩形平板; 振動特性; 水下聲輻射; Rectangular plate; Vibration characteristics; Underwater acoustic radiation; |
語 文 | 中文(Chinese) |
中文摘要 | 本文之目的為討論矩形薄板於液體中,受集中荷重時,其振動與聲輻射的結果與 計算方法。以Green's function之解的形態,來處理簡支支承條件的薄板,在半無限空間 中,穩定狀態的振動下,薄板振動的自動頻率,及表面壓力分布情形。並進一步探討在流 體中,其遠場聲輻射的情況。本文之處理方法為:以簡支條件的薄板在真空狀態下,其正 交特徵函數來組合在流體下,薄板之變位狀況。再以驅動力的阻抗來求解其自然頻率值。 最後以實際例子來說明矩形薄板在真空中與流體中之模態計算結果,並與Rayleigh之結果 作比較,以證明本文結果之正確性。 |
英文摘要 | The vibration characteristics and acoustic radiation of simply supported rectangular plate emerged in fluid and subjected to concentrated loading are discussed in this paper. A Green function solution is employed to obtain the response of steady state vibration, the pressure distribution on the surface of the plate and the acoustic radiation to the far field of semi-infinite space. The displacement of the plate embedded in the fluid is derived by the composition of the eigen functions of the plate in the vacuum and the natural frequencies can be found by examining the driving force impedance. Numerical examples for the plate in the vacuum and fluid are compared with the results by Rayleigh. |
本系統中英文摘要資訊取自各篇刊載內容。