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研究生:謝坤安
研究生(外文):Kuen-AnHsieh
論文名稱:彈性支撐之旋轉樑受移動負荷下之動態分析
論文名稱(外文):Dynamic Analysis of an Elastically Supported, Spinning Beam Subjected to a Moving Load
指導教授:崔兆棠
指導教授(外文):Siu-Tong Choi
學位類別:碩士
校院名稱:國立成功大學
系所名稱:航空太空工程學系碩博士班
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:2012
畢業學年度:100
語文別:中文
論文頁數:52
中文關鍵詞:有限元素法移動負荷旋轉樑動態分析
外文關鍵詞:Finite Element MethodMoving LoadSpinning BeamDynamic Analysis
相關次數:
  • 被引用被引用:0
  • 點閱點閱:138
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  • 下載下載:25
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本論文主要研究一彈性支撐之旋轉樑受移動負荷之動態響應。假設旋轉樑為Timoshenko樑,且受一移動力沿軸向作用。本研究利用有限元素法建立模型,利用拉格朗至法(Lagrangian approach)以求得運動方程式,利用朗吉–庫塔法(Runge-Kutta method)求解旋轉樑系統動態響應,並探討支承勁度係數、移動負荷速度與轉軸轉速對系統動態響應的影響。由數值結果得知系統振動與移動負荷速度有很大的關聯,當移動負荷的移動速度越慢則振動也越小。
In this thesis studies the dynamic response of an Elastically Supported Spinning Beam Subjected to a Moving Load. Firstly, this study simulates the Timoshenko beam, subject is under a moving force along the axial, this study uses the finite element method to construct the model, then uses the Lagrangian approach to derive the equations of motion, using the Runge-Kutta method to solve the dynamic response of the spinning system, and then we discuss stiffness coefficient, the speed of moving load, shaft whirl speed that may affect the system dynamic response. According to the numerical results system vibration and the moving load speed have great relevance, when the speed of the moving load is reduced, the smaller the vibration is.
摘 要 II
Abstract III
致謝 IV
目錄 V
表目錄 VII
圖目錄 VIII
符號說明 XI
第一章 緒論 1
1-1研究動機與目的 1
1-2文獻回顧 2
1-3本文研究 4
第二章 旋轉軸系統運動方程式 6
2-1分析模型與基本假設 6
2-2 有限元素法 6
2-2-1 轉軸 6
2-2-2 軸承 10
2-2-3 外力 11
2-2-4 系統運動方程式 12
第三章 數值討論與驗證 13
3-1準確性分析 13
3-2集中負荷於彈性支撐之旋轉樑系統 14
3-2-1固定負荷於非旋轉樑中央 14
3-2-2固定負荷於旋轉樑中央 15
3-2-3移動負荷於非旋轉樑 15
3-2-4移動負荷於旋轉樑 16
3-3靜態縮減法應用於變質量旋轉樑系統 18
3-4模擬車床加工 20
參考文獻 23
附錄 26

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