波源疊加法在二維聲場之分析

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姓名

劉貴銘(KUEI-MING LIU) 查詢紙本館藏

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機械工程學系

論文名稱

波源疊加法在二維聲場之分析
(Analysis of Two-Dimension Acoustics Using the Method of Superposition)

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摘要(中)

本文之目的在探討利用波源疊加法分析在不同邊界條件下之放射及散射聲場,以往研究振動體都為緩慢變動的邊界條件。而本論文對變動較為驟烈的邊界條件進行分析,
,由測試結果顯示,所得到的數值解與邊界元素法的數值解相比極為準確,證實此方法在二維聲場問題上,為一有效適用於各種邊界條件的數值方法。
文中對圓形剛體進行散射分析,將就不同波數條件下進行測試,發現所得數值解與解析解相當一致。因此,驗證利用本文方法對剛體散射分析亦為一有效準確數值方法。

摘要(英)

A Superpostion Method for Analysis of Two-Dimension Acoustics

關鍵字(中)

★ 波源疊加法
★ 活塞聲場分析

關鍵字(英)

★ Superposition Method
★ Piston

論文目次

目錄
頁次
中文摘要 I
誌謝 II
目錄 III
圖目錄 V
表目錄 VI
符號說明 VII
一、緒論 1
1.1 前言 1
1.2 文獻回顧 2
1.3 本文架構 4
二、疊加法公式推導 5
2.1 公式推導 5
2.2 公式轉換 8
2.3 數值演算 9
三、實例測試與討論 12
3.1 圓形振動體的聲場放射 12
3.2 長方形振動體的聲場放射 14
3.3 活塞的聲場分析 18
四、聲場散射分析與討論 23
4.1 聲場散射公式 23
4.2 聲場散射分析 26
五、結論 30
參考文獻 32
附錄A
附錄B

參考文獻

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指導教授

鄔蜀威(Shu-Wei Wu)

審核日期

2002-7-17

推文