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研究生:陳禹都
研究生(外文):Yu-Tu Chen
論文名稱:雙懸臂樑吸振器之模型建立與效益探討
論文名稱(外文):Modeling and Effectiveness of Dual Cantilevered Beam on Dynamic Vibration Absorber
指導教授:黃世欽黃世欽引用關係
指導教授(外文):Shyh-Chin Huang
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:88
中文關鍵詞:懸臂樑吸振器最佳化吸振效益
外文關鍵詞:effectivenessoptimizationdynamic vibration absorber
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本研究探討雙懸臂樑應用在互動式吸振器之模型建立與吸振效應之最佳化研究,首先建立具雙懸臂樑吸振器系統之模型,推導其運動方程式,並利用主系統位移響應定義吸振指標得知吸振效果,了解影響主系統功率之參數,分別為質量比、調諧頻寬、阻尼係數與阻尼器連接雙懸臂樑的位置。經由改變參數,掌握主系統位移響應的變化趨勢。本研究並進行實驗,經由實驗驗證理論之正確性。最後進行最佳化分析,比較在不同質量比和與不同調諧頻寬之下,各參數對雙懸臂樑吸振器之吸振效應。提出吸振效應之最佳狀態設計參數値,提供使用者一設計參考。
The purpose of this thesis is to explore the modeling and effectiveness of dual-beam type dynamic vibration absorber. First, by deriving the equation of motion, the parameters of the main system power are obtained, and they are mass ratio, tuned frequency range, damping coefficient, and the location of the damper on the dual cantilevered beam. By changing the parameters, the varying tendency of the main system power were then realized. Next, experiments are performed to verify the derived theoretical model. Besides, we analyzed the optimization in order to compare the absorption effects of the dynamic vibration absorber for each parameter at different driving frequencies. The optimized parameters for the absorption effects are also presented by the way of numerical results. In the end of the paper, some suggestions of future study are also provided.
摘 要 I
ABSTRACT II
誌 謝 III
目 錄 V
圖 表 索 引 VIII
符 號 索 引 XIII
第一章 緒論 1
1.1 文獻回顧 1
1.2 研究動機與目的 3
1.3 本文架構 4
第二章 自由振動分析 11
2.1 系統之能量式與離散化 11
2.2 運動方程式 14
2.3 DVA自由振動分析 16
2.4 具DVA之系統自然頻率 18
第三章 系統強迫振動分析 26
3.1 頻率響應函數(FRF) 26
3.2 參數對吸振效應之探討 29
3.2.1 阻尼器連接位置之影響 31
3.2.2 質量比之影響 32
3.2.3 調諧頻寬之影響 33
第四章 實驗驗證 40
4.1 實驗架設 40
4.1.1 實驗儀器設備 40
4.1.2 頻譜分析儀之基本設定 42
4.2 實驗結果與討論 44
第五章 雙懸臂樑吸振器最佳化探討 59
5.1 最佳化方法 59
5.1.1 地形鑑識法 60
5.1.2 複合形法 61
5.2 目標函數 64
5.3 數值結果與討論 65
第六章 結論 80
6.1 結論 80
6.2 未來可行之研究發展方向 83
參 考 文 獻 85
作 者 簡 介 88
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