| 研究生: |
陳峰州 Fong-Zhou Chen |
|---|---|
| 論文名稱: |
壓電吸振器應用於平板的振動與噪音控制 |
| 指導教授: |
黃以玫
Yii-Mei Huang |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 畢業學年度: | 88 |
| 語文別: | 中文 |
| 論文頁數: | 90 |
| 中文關鍵詞: | 壓電吸振器 、聲音輻射 、被動式控制 、漢米爾頓定理 |
| 外文關鍵詞: | Gerlerkin''s method, Rayleigh integral |
| 相關次數: | 點閱:10 下載:0 |
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以壓電材料作為吸振器,利用被動式控制,藉以減少薄板之振動,
降低聲音輻射產生之噪音。
以能量的觀點,根據漢米爾頓定理及對薄板與壓電材料的基本假設,
求出加上壓電材料的板之運動方程式,壓電材料接上外加電路後,
得到類似機械式吸振器型式之電路方程式,
並利用 Galerkin''s method ,
求解系統之位移解;
而為了求聲音傳遞之聲場,則使用 Rayleigh integral ,
將薄板上每個模態之聲音輻射,
對空間中任一觀察點之聲壓總和,即得到觀察點之聲壓。
針對壓電吸振器的貼放位置及面積大小的變化,及以不同型式的力激振,
對薄板的位移變化及聲音輻射的聲場分佈之影響,加以分析與討論。
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