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研究生: 謝和諺
Hsieh, He-Yen
論文名稱: 雙層圓柱正交性非均質圓管受扭力作用下之端部效應
The End Effects of Two-Layer Circular Tubes with Cylindrically Orthotropic Non-homogeneous Materials Under Torsion
指導教授: 褚晴暉
Chue, Ching-Hwei
學位類別: 碩士
Master
系所名稱: 工學院 - 機械工程學系
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: 46
中文關鍵詞: 端部效應圓柱正交性聖維南定理狀態空間法特徵值展開材料異向性功能性材料複合材料
外文關鍵詞: End effects, Cylindrically orthotropic, Non-homogeneous material, State space matrix, Eigen-function expansion
相關次數: 點閱:159下載:3
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  • 本文探討雙層圓柱正交性非均質圓管受到扭力作用下端部效應的影響。為了解聖維南定理針對上述問題的適用性,我們考慮結構為圓管,一端固定另一端受純扭矩且側表面無受力。依據彈性力學理論,利用狀態空間法與特徵值展開法解得解析解,最後用數值方法進行比較在不同的材料異向性、功能性材料、複合材料與管壁厚度,去探討端部效應影響的程度。

    This thesis discusses the end effects of two-layer circular tubes with cylindrically orthotropic non-homogeneous materials under torsion. The formulation for a fixed-free bi-layer tube is derived by using state space matrix and eigen-function expansion. The numerical results of displacement and stresses are exactly obtained and are compared with the solutions based on the mechanics of materials. The factors that will influence the end effects contain the anisotropy, the non-homogeneity, and the material constants.

    摘要 I Abstract II 誌謝 III 目錄 IV 表目錄 VI 圖目錄 VII 符號說明 IX 第一章 緒論 1 1.1前言 1 1.2文獻回顧 1 1.3本文架構 2 第二章 基礎理論 4 2.1彈性力學方程式 4 2.2狀態空間方程式 5 2.3端部效應與聖維南定理 7 2.4特徵值問題與Sturm-Liouville方程式 8 第三章 公式推導 9 3.1問題描述 9 3.2邊界條件與連續條件 10 3.3求解過程 10 3.4退化問題 20 3.4.1雙層圓柱正交性均質圓管 20 3.4.2單層圓柱正交性均質圓管 22 3.4.3單層圓柱正交性均質實心圓桿 23 第四章 數值驗證與結果討論 25 4.1特徵值的計算 26 4.2材料異向性對端部效應的影響 28 4.3非均質材料與複合材料對端部效應的影響 33 4.4管壁厚度對端部效應的影響 41 4.5結論 43 參考文獻 45

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