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題名 | 彈性邊界矩形平板利用壓電激振動態解及聲輻射功率之計算 |
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作 者 | 宋家驥; 詹金燦; | 書刊名 | 力學 |
卷期 | 11:4 1995.12[民84.12] |
頁次 | 頁327-338 |
分類號 | 440.13 |
關鍵詞 | 聲輻射功率; 固定邊界平板; 壓電陶瓷; Elastically supported rectangular plate; Radiated sound power; Piezomoment; |
語文 | 中文(Chinese) |
中文摘要 | 本文研究方向有二:首先推導出受外力激振、非簡支邊界,矩形平板的修正 Vlasorv's 動態(簡諧)解。此解可以免除掉解高階聯立方程式或高階矩陣計算上的困難, 且大為簡化了聲輻射的計算。其次是以二維點彎矩模擬壓電陶瓷作為激振源,計算聲輻射功 率。 以上兩部份結果和實驗數據做比較, 均相當吻合。 聲輻射是根據美國國家標準 ANSI-S1.21-1972 在本所迴響室內配合無響箱量測而得。 |
英文摘要 | There are two major problems investigated in this research. Finally, the forced vibration response of elastically supported rectangular plate is theorectically solved by modifying the Vlasov's method. In this modification the difficulties of solving high order simultaneous equations and matrix are avoided and the calculation of structural borne sound power is much more simplified. The solutions are verified experimentally by using shaker and piezoceramics as point force and two dimensional point moment excitation, respectively. Secondly, the radiated sound power of the plate subjected to the piezomoment excitation is then calculated. The measurement of the radiated sound power is based on ANSI S1.21 and conducted in the reverberant room with an anechoic box to simulate half infinite space. The results of measurement match the theorectial prediction perfectly. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。