研究生: |
黃靖翔 Jing-xiang Haung |
---|---|
論文名稱: |
魚洗盆之振動分析與改良 Vibration Analysis and Improvement of a Fish Basin |
指導教授: |
徐茂濱
Mau-Pin Hsu |
口試委員: |
呂森林
none 廖崇禮 none |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 127 |
中文關鍵詞: | 魚洗盆 、模態測試 、流固耦合 、振動 、有限元素法 |
外文關鍵詞: | Fish basin, Modal testing, Fluid-structure coupling, Vibration, Finite element method |
相關次數: | 點閱:215 下載:0 |
分享至: |
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
魚洗盆是一中國文化產物,由於其獨特形狀及振動特性,當用雙手搓動把手時,能在特定區域產生特殊水波紋變化,同時發出嗡嗡聲響,此現象具有高度的玩賞及研究價值。
本文使用有限元素軟體MSC. Nastran,建立魚洗盆之振動數值模型,此數值模型再以模態測試結果進行調校,以確保其正確性。接著使用動態分析軟體MSC. Dytran,進行流固耦合分析,模擬水波紋動態,以了解其產生原因。最後以實際魚洗盆進行激振實驗,觀察水波紋之變化並錄音,了解聲音與自然頻率間的關係,藉由有限元素模型之修改,使聲音能有簡單的和音變化。
Fish basin is a Chinese cultural heritage. Possessing a distinctive shape and vibration characteristic, when rubbing the handles of the fish basin, unique water ripples or even tiny splashes will be generated around specific portions of the basin and a loud monotone note will be produced. This phenomenon not only is amusing but also worth studying.
This study employed finite element software MSC.Nastran for constructing a numerical model for vibration. Then this model was tuned by modal testing results for better accuracy. Thereafter, dynamic analysis software MSC.Dytran was employed for analyzing fluid-structure interaction and simulating the movement of water ripples. These measures can help us understand what are causing the above-mentioned phenomena. To understand the association between sound and natural frequency, the vibration experiments were conducted using a real fish basin, to observe changes in water ripples and record sounds. The finite element model was also modified to add some simple combination tones to the sound.
[1] Allemang, R. J., “ Modal Analysis - Where Do We Go from Here? ” Modal Analysis: the International Journal of Analytical and Experimental Modal Analysis, Vol. 8, No. 2, pp. 79-91, 1993.
[2] Ewins, D. J., Modal Testing: Theory and Practice, John Wiley & Sons, New York, 1995.
[3] Broch, J. T., Mechanical Vibration and Shock Measurements, Brüel & Kjær, Denmark, 1984.
[4] Heylen, W., Modal Analysis Theory and Testing, Katholieke Universiteit Leuven, Belgium, 1997.
[5] McConnell, K. G., Vibration Testing: Theory and Practice, John Wiley & Sons, New York, 1995.
[6] 李約瑟,《中國科學技術史》,北京 科學出版社,1990。
[7] 戴念祖,『噴水魚洗的起源及其物理試析』,《中國古代科技今解》,1989。
[8] 王大鈞,『龍洗的實驗模態分析與搓振運動實測』,《力學與工程-杜慶華院士八十壽辰賀文集》,北京 清華大學出版社,1999.
[9] 徐勞立,『魚洗振動頻率的分析與測量』,《物理實驗》,第24卷,第6期,2004。
[10] 杜穎,劉習軍,賈啟芳,『流固耦合動力學的研究』,《機床與液壓》,2004。
[11] 王茂興,《MSC.Dytran 流固耦合模擬分析之探討》,中興工程顧問社 土木資訊研究中心。
[12] MSC.Software,《MSC.Dytran 中文基礎教材》,美商麥格尼軒股份有限公司台灣分公司,2003。
[13] MSC.Software, Dytran 2008 R1 User’s Guide, 2008.
[14] 吳冠英,《以模態測試與有限元素法探討靜止輪胎之振動模態》,國立台灣科技大學機械工程學研究所碩士論文,2001。
[15] 張志偉,《靜止輪胎與輪圈的實驗模態分析》,國立台灣科技大學機械工程學研究所碩士論文,1999。
[16] 陳仁寬,《樂理入門與指導》,臺北:音樂研究社,2007。