簡易檢索 / 詳目顯示

研究生: 王國龍
Wang, Kou-Long
論文名稱: 旋轉複合疊層圓柱殼基本振頻對纖維角度之最佳化分析
Maximization of the Fundamental Frequencies of Spinning Composite Cylindrical Shells with Respect to Fiber Orientation
指導教授: 胡宣德
none
學位類別: 碩士
Master
系所名稱: 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 113
中文關鍵詞: 基本振頻圓柱殼最佳化分析
外文關鍵詞: Cylindrical Shells, Fundamental Frequency
相關次數: 點閱:64下載:1
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
  • 由 於 複 合 材 料 具 備 材 質 輕、 高 勁 度、 低 導 熱 等 優 越 的 特 性, 已 被 廣 泛 應 用 於 先 進 工 業 工 程 結 構 上。 為 避 免 結 構 物 產 生 共 振 現 象 , 使 材 料 超 過 容 許 變 位 而 破 壞 , 因 此 結 構 物 振 動 頻 率 的 分 析 乃 成 為 結 構 設 計 上 之 準 則 之 一 。
    本 文 利 用 有 限 元 軟 體 ABAQUS 來 分 析 複 合 疊 層 圓 柱 殼 (軸) 之 基 本 振 動 頻 率 受 邊 界 條 件 、 纖 維 角 度 、 疊 層 數 目 及 等 速 旋 轉 後 所 造 成 的 影 響 , 並 應 用 黃 金 分 割 法 來 求 出 複 合 疊 層 圓 柱 殼 (軸) 中 , 最 佳 纖 維 之 排 列 角 度 及 其 對 應 之 最 高 基 本 振 動 頻 率 。
    分 析 結 果 顯 示 , 在 各 種 不 同 的 情 況 下 , 疊 層 圓 柱 殼 (軸) 基 本 振 頻 隨 厚 度 的 增 加 而 上 升, 在 大 部 分 的 情 形 下 基 本 振 動 頻 率 隨 轉 速 的 增 加 而 上 升 (例 外 部 分 在 文 中 有 特 別 說 明 之 ), 若 選 擇 適 當 的 纖 維 角 度 與 堆 疊 方 式,則 可 提 高 疊 層 圓 柱 殼 (軸) 之 基 本 振 頻 。

    none

    提要............Ⅰ 誌謝............Ⅱ 目錄............Ⅲ 表目錄..........Ⅷ 圖目錄..........Ⅸ 第一章 緒論............1 1.1 研究動機............1 1.2 研究方法............3 1.3 本文目的............4 1.4 本文內容與架構......5 第二章 材料勁度矩陣....6 2.1 殼元素簡介..........6 2.2 材料主軸座標(1-2-3)系統下應力-應變關係.....7 2.3 元素座標(x-y-z)系統下應力-應變關係.........9 2.4 合應力與合力矩關係........................10 第三章 有限元素之振動分析....................14 3.1 振動方程式的推導..........................14 3.1.1 哈密爾頓原理(Hamilton's principle)......14 3.1.2 元素之振動方程式........................15 3.1.3 結構之振動方程式........................18 3.2 自然頻率與振態之分析......................19 第四章 黃金分割法與收斂性分析................23 4.1 基本概念..................................23 4.2 黃金分割法之演算及其收斂..................26 4.3 數值分析流程..............................27 4.4 收斂性分析................................27 第五章 數值範例與分析探討.....................29 文獻回顧比較..................................29 5.1 問題說明..................................31 5.2 黃金分割法計算說明與圓柱殼受邊界條件之影響說明..............................................33 5.2.1 黃金分割法的計算流程....................33 5.2.2 不同疊層狀況的複合疊層圓柱殼(軸),纖維角度邊受界條件的影響................................35 5.3 在靜止時,複合疊層圓柱殼(軸)在不同軸向長度下,纖維角度對振動頻率之影響......................36 5.3.1 薄殼 ...................................36 5.3.2 厚殼 ...................................37 5.3.3 不同疊層狀況對其纖維角度與振動頻率最佳化之結果............................................37 5.4 在轉速度為10000RPM時,複合疊層圓柱殼纖維角度對振動頻率之影響................................38  5.4.1 薄殼....................................38 5.4.2 厚殼....................................39 5.4.3 不同疊層狀況對其纖維角度與振動頻率最佳化之結果............................................40  5.5 在轉速度20000RPM時,複合疊層圓柱殼纖維角度對振動頻率之影響..................................42 5.5.1 薄殼....................................42 5.5.2 厚殼....................................42 5.5.3 不同疊層狀況對其纖維角度與振動頻率最佳化之結果............................................43  第六章 結論與建議............................45 結論..........................................45 建議..........................................46 參考資料......................................48 附錄.........................................108

    1. 蔡振裕,"對稱複合疊層圓柱殼之基本振動頻率及纖維角度受幾何邊界形狀及邊界條件之影響",國立成功大學土木學系,碩士論文,1996.
    2. 余俊,全永昕,余夢生,張英會,"機械設計",第二版,亞東書局印行.
    3. K.Y.Lam.,and Wu,Qian.,"Vibration of Thick Rotating Laminated Composite Cylindrical Shells, "Journal of Sound and Vibration (1999) 225(3),pp.483-501.
    4. K.Y.Lam.,and Wu,Qian., "Free Vibration of Symmetric Angle-ply Thick Laminated Composite Cylindrical Shells,"Composite: Part B 31(2000) pp.345-354.
    5. D. Guo. ,and F. L. Ghu. and Z. C. Zheng., "The Infulence of Rotation on Vibration of a Thick Cylindrical Shell, " Journal of Sound and Vibration (2001) 242(3),pp.487-505.
    6. D. Guo. ,and Zhaochang. Zheng and Fulei. Chu, "Vibration Analysis of Spinning Cylindrical Shell by Finite Element Method, " International Journal of Solids and Structures (2002) 39,pp.725-739.
    7. M.Endo, K.Hatamura, M.Sakata, and O.Taniguch," Flexural Vibration of a Thin Rotating Ring." Journal of Sound and Vibration (1984) 92,pp.261-272.
    8. Chen ,Y. ,Zhao, H. B.,Shen, Z. P,"Vibration of High Speed Rotation Shell with Calculations for Cylindrical Shells.", Journal of Sound and Vibration (1993) 160,pp.137-160.
    9. Isaac., M. Daniel., and Ori , Ishai. ,"Engineering Mechanics of Composite Materials,".Chapter 7
    10. Agarwal, B. D., and Broutman, L. J., "Analysis and Performance of Fiber Composites, " Second Edition, Chapter 6, pp. 187-207, 1990.
    11. Baharlou, B., and Leissa, A. W., "Vibration and Buckling of Generally Laminated Composite Plates with Arbitrary Edge Conditions," International Journal of Mechanical Sciences, Vol. 29, pp. 545-555, 1993.
    12. Bathe, K. J., and Wilson, E. J., "Large Eigenvalue Problems in Dynamic Analysis," Journal of Engineering Mechanics Division, ASCE, Vol. 98, pp. 1471-1485, 1972.
    13. Bert, C. W., "Optimal Design of a Composite Material Plate to Maximize Its Fundamental Frequency," Journal of Sound and Vibration, Vol. 50, pp. 229-237, 1977.
    14. Chai, G. B., "Free Vibration of Generally Laminated Composite Plates with Various Edge Support Conditions," Composite Structures, Vol. 29, pp. 249-258, 1994.
    15. Chandrashekhara, K., "Free Vibration of Anisotripic Laminated Doubly Curved Shells," Computers and Structures, Vol. 33, pp. 435-440, 1989.
    16. Chun, L., and Lam, K. Y., "Dynamic Analysis of Clamped Laminated Curved Panels," Composite Structures, Vol. 30, pp. 389-398, 1995.
    17. Cook, R. D., Malkus, D. S., and Plesha, M. E., Concepts and Applications of Finite Element Analysis, Third Edition, Chapter 13, Wiley, New York, 1989.
    18. Crawley, E. F., "The Natural Modes of Graphite/Epoxy Cantilever Plates and Shells," Journal of Composite Materials, Vol. 13, pp. 195-205, 1979.
    19. Hibbitt, Karlsson, and Sorensen, Inc., ABAQUS User and Theorey Manuals, Version 5.3, Providence, RI, 1994.
    20. Hu, H.-T. and HO, M.-H., "Influence of Geometry and End conditions on Optimal Fundmental Natural Frequencies of Symmetrically Laminated Plates," to appear in Journal of Reinforced Plastics and Composites, 1996.
    21. Hu, H. T., and Wang, S. S., "Optimization for Buckling Resistance of Fiber-Composite Laminate Shells with and without Cutouts," Composite Structures, Vol. 22, pp. 3-13, 1992.
    22. Irons, B. M., "The Semi-Loof Shell Element," In: Ashwell, D. G.; Gallagher, R. H. (ed.) Finite Elements for Thin Shells and Curved Members, Wiley, New York, pp. 197-222, 1976.
    23. Kolman, B., and Beck, R. E., Elementary Linear Programming with Applications, Academic Press, Orlando, pp. 59-142, 1980.
    24. Leissa, A. W., and Kadi, A. S., "Curvature Effects on Shallow Shell Vibrations," Journal of Sound Vibration, Vol. 16, pp. 173-183, 1971.
    25. Leissa, A. W., and Narita, Y., "Vibration Studies for Simply Supported Symmetrically Laminated Rectangular Plates," Composite Structures, Vol. 12, pp. 113-132, 1989.
    26. Maror, M. J., Numerical Analysis-A Practical Approach, Second Edition, Chapter 2, Macmillan Publishing Company, New York, 1987.
    27. Mindlin, R. D., "Influence of Rotatory Inertia and Shear on Flexural Motions of Isotropic, Elastic Plates," Journal of Applied Mechanics, Vol. 18, pp. 31-38, 1951.
    28. Negm, H. M., and Armanios, E. A., "Calculation of the Natural Frequencies and Steady State Response of Thin Plates in Bending by an Improved Rectangular Element," Computers and Structures, Vol. 17, pp. 139-147, 1983.
    29. O'Neil, P. V., Advanced Engineering Mathematics, Second Edition, Chapter 10, 1987.
    30. Qatu, M. S., and Leissa, A. W., "Natural Frequencies for Cantilevered Doubly Curved Laminated Composite Shallows Shells," Composite Structures, Vol, 17, pp. 227-255, 1991.
    31. Raouf A. R., "Tailoring the Dynamic Characteristics of Composite Panels Using Fiber Orientation," Composite Structures, Vol. 29, pp. 259-267, 1994.
    32. Robert, M. J., Mechanics of Composite Materials, Chapter 2, pp. 45-51, 1975.
    33. Vanderplaats, G. N., Numerical Optimization Techniques for Engineering Design with Applications, McGraw-Hill, New York, pp. 155-157, 1984.
    34. Whitney, J. M., "Free Vibration of Anisotropic Rectangular Plates," Journal of the Acoustical Society of America, Vol. 52, pp. 448-449, 1972.
    35. Whitney, J. M., "Shear Correction Factors for Orthotropic Laminates Under Static Load," Journal of Applied Mechanics, Vol. 40, pp. 302-304, 1973.
    36. Whitney, J. M., "The Effecy of Boundary Conditions on the Response of Laminated Composites," Journal of Composite Materials, Vol. 4, pp. 192-203, 1970.
    37. Zienkiewicz, O. C., and Champbell, J. S. "Shape Optimization and Sequential Linear Programming," In: Gallagher, R. H.; Zienkiewicz, O. C. (ed.) Optimum Structural Design: Theory and Applications, Wiley, New York, pp. 109-126, 1973.

    下載圖示 校內:2006-07-13公開
    校外:2006-07-13公開
    QR CODE