簡易檢索 / 詳目顯示

回結果列表
研究生： 趙國鈞
CHAO, KUO-CHUN
論文名稱： 有限元素ANSYS分析圓管在有外壓或無外壓循環彎曲負載下之力學行為
Finite Element ANSYS Analysis on the Mechanical Behavior of Circular Tube under Cyclic Bending with or without External Pressure
指導教授： 潘文峰
Pan, Wen-Fung
學位類別： 碩士
Master
系所名稱： 工學院 - 工程科學系
Department of Engineering Science
論文出版年： 2009
畢業學年度： 97
語文別： 中文
論文頁數： 65
中文關鍵詞： 橢圓化-曲度 、橢圓化-循環圈數 、彎矩-曲度
外文關鍵詞： ovalization-number of cycles, moment-curvature, ovalization-curvature
相關次數： 點閱：75  下載：8 
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

    • 本研究主要是以3D繪圖軟體Pro/Engineer及有限元素軟體ANSYS分析AL-6061-T6鋁合金圓管及CS1020碳鋼圓管，在有或無外壓對稱曲度循環彎曲負載下的力學行為。力學行為包含有彎矩-曲度、橢圓化-曲度和橢圓化-循環圈數的關係，且分別探討圓管中央、圓管全長11/24位置及圓管全長18/24位置截面的橢圓化量。並將ANSYS分析的結果和Kyriakides 與Corona【5】所做的實驗結果進行比較。在ANSYS分析和實驗結果顯示，圓管在對稱曲度循環彎曲下有無外壓對彎矩-曲度關係幾乎沒有任何的影響，但有無外壓對橢圓化-曲度的關係卻有很顯著的影響，也就是當圓管在對稱曲度循環彎曲負載時，有外壓的橢圓化量比無外壓的橢圓化量增加的速率較快。此外，圓管全長的18/24位置截面，因較接近施力端的緣故，使得橢圓化增加的速率較其他兩個位置截面快。ANSYS分析和實驗結果比較後發現，理論能合理的描述實驗結果。

    The main purpose of thesis is to use the 3D mapping software Pro/Engineer and finite element software ANSYS to analyze the mechanical behavior of AL-6061-T6 aluminum alloy and CS1020 carbon steel tubes subjected to symmetric-curvature cyclic bending with or without external pressure. The mechanical behavior contains the moment-curvature, ovalization-curvature and ovalization-number of cycles relationships. The ovalizations of tube’s cross-section are discussed at the center, 11/24 and 18/24 of the tube span. The analysis result obtained by ANSYS is compared with the experimental result tested by Kyriakides and Corona [5].It is shown from the ANSYS analysis and experimental results that moment- curvature relationship does not affect by the external pressure for circular tubes subjected to symmetric-curvature cyclic bending. However, the ovalization- curvature relationships is strongly influent by the external pressure. That means the ovalization of tube’s cross-section at some external pressure increases faster than that at no external pressure. In addition, the ovalization at the 18/24 of the tube span increases faster that that at center and 11/24 of the tube span. The analysis result obtained by ANSYS is compared with the experimental result. Good agreement between them is achieved.

    中文摘要 --------------------------------------------- I 英文摘要 --------------------------------------------- II 誌 謝 --------------------------------------------- III 目 錄 --------------------------------------------- IV 表 目 錄 --------------------------------------------- IX 圖 目 錄 --------------------------------------------- X 符號說明 --------------------------------------------- XIII 第一章 緒論---------------------------------------- 1 1-1 研究背景及動機------------------------------- 1 1-2 文獻回顧------------------------------------- 3 1-3 論文內容------------------------------------- 10 第二章 理論基礎------------------------------------ 11 2-1 有限元素分析法------------------------------- 11 2-2 塑性理論基礎--------------------------------- 15 2-3 Pro/Engineer 繪圖軟體簡介-------------------- 20 2-4 ANSYS簡介---------------------------------- 22 2-4-1 簡介----------------------------------------- 22 2-4-2 前處理(Preprocessor)模組--------------------- 22 2-4-3 分析計算(solution)模組----------------------- 24 2-4-3 後處理器(Postprocessor)模組------------------ 25 第三章 ANSYS分析------------------------------ 27 3-1 元素的選擇----------------------------------- 27 3-2 圓管材料特性及相關參數----------------------- 29 3-3 有限元素模型之建立--------------------------- 32 3-3-1 建立實體模型--------------------------------- 32 3-3-2 網格分割------------------------------------- 34 3-4 邊界條件與負載方式--------------------------- 35 3-4-1 邊界條件------------------------------------- 35 3-4-2 負載方式------------------------------------- 36 3-5 求解過程------------------------------------- 37 第四章 ANSYS分析結果與討論-------------------- 40 4-1 AL-6061-T6鋁合金圓管ANSYS分析與實驗結果----- 40 4-1-1 鋁管在對稱曲度循環彎曲下無外加壓力的力學行為- 40 4-1-1-1 實驗結果------------------------------------- 40 4-1-1-2 ANSYS分析結果------------------------------ 41 4-1-1-3 ANSYS分析與實驗結果之比較------------------ 42 4-1-2 鋁管在對稱曲度循環彎曲下有外加壓力的力學行為- 45 4-1-2-1 實驗結果------------------------------------- 45 4-1-2-2 ANSYS分析結果------------------------------ 45 4-1-2-3 ANSYS分析與實驗結果之比較------------------ 46 4-2 CS1020碳鋼圓管ANSYS分析與實驗結果--------- 51 4-2-1 碳鋼管在對稱曲度循環彎曲下無外壓時的力學行為- 51 4-2-1-1 實驗結果------------------------------------- 51 4-2-1-2 ANSYS分析結果------------------------------ 51 4-2-1-3 ANSYS分析與實驗結果之比較------------------ 52 4-2-2 碳鋼管在對稱曲度循環彎曲下有外壓時的力學行為- 55 4-2-2-1 實驗結果------------------------------------- 55 4-2-2-2 ANSYS分析結果------------------------------ 55 4-2-2-3 ANSYS分析與實驗結果之比較------------------ 56 4-2-3 碳鋼管作對稱曲度循環彎曲在不同壓力時的橢圓化與圈數關係----------------------------------- 59 4-2-3-1 實驗結果------------------------------------- 59 4-2-3-2 ANSYS分析結果------------------------------ 59 4-2-3-3 ANSYS分析與實驗結果之比較------------------ 59 第五章 結論----------------------------------- 62 參考文獻 --------------------------------------------- 64 自述 --------------------------------------------- 68

    參 考 文 獻
    1. S. Kyriakides and P. K. Shaw, “Response and Stability of Elastoplastic Circular Pipe under Combined Bending and External Pressure,＂Int. J. Solids Struct., Vol.18, No.11, pp.957-973, 1982
    2. P. K. Shaw and S. Kyriakides, “Inelastic Analysis of Thin-Walled Tubes under Cyclic Bending,＂Int. J. Solids Struct., Vol.21, No.11, pp.1073-1100, 1985
    3. S. Kyriakides and P. K. Shaw, “Inelastic Buckling of Tubes under Cyclic Bending,＂ASME,J. of Pressure Vessel Tech., Vol.109, pp.169-178, 1987
    4. E. Cornoa and S. Kyriakides, “On the Collapse of Inelastic Tubes under Combined Bending and Pressure,＂Int. J. Solids Struct., Vol.24,No.5, pp.505-535, 1988
    5. E. E. Cornoa and S. Kyriakides, “An Expermental Investigation of the Degradation and Buckling of Circular Tubes under Cyclic Bending and external Pressure,＂Thin-Walled Structures, Vol.12, pp.229-263, 1991
    6. S. Kyriakides and G. T. Ju, “Bifurcation And Localization Instabilities In Cylindrical Shells Under Bending-I. Experiment,＂Int. J. Solids Struct, Vol.29, No.9, pp.1117-1142, 1992
    7. E. Cornoa and S. P. Vaze, “Buckling of Elastic-Plastic Square Tubes under Bending, ＂Int. J. Mech. Sci., Vol.38, No.7, pp.753-775, 1996
    8. W. F. Pan and Y. S. Her, “Viscoplastic Collapse of Thin- Walled Tubes under Cyclic Bending,＂ASME, J. of Engineering Materials and Tech., Vol.120, pp.287-290, 1998
    9. W. F. Pan, T. R. Wang and C. M. Hsu, “ A Curvature-Ovalization Measurement Apparatus for Circular Tubes under Cyclic Bending,＂Experimental Mechanics, Int.J., Vol.38, No.2, pp. 99-102, 1998
    10. W. F. Pan and C. H. Fan, “An Experimental Stady on the Effect of Curvature-Rate at Preloading Stage on Subsequent Creep or Relaxation of Thin-Walled Tubes under Pure Bending,＂JSME Int. J., Series A, Vol.41, No.4, pp.525-531,1998
    11. K.L. Lee, W.F. Pan and J.N. Kuo, “The Influence of the Diameter-to-Thickness Ratio of the Stability of Circular Tubes under Cyclic Bending,” International Journal of Solids and Structures, Vol. 38, pp. 2401-2413, 2001
    12. M. Elchalakani, X.L. Zhao and R.H. Grzebieta, “ Concrete-filled circular steel tubes subjected to pure bending, ” Journal of Constructional Steel Research, Vol. 57, pp. 1141-1168 , 2001
    13. K.L. Lee and W.F. Pan, “ Pure Bending Creep of SUS 304 Stainless Steel Tuber, ” Steel and Composite Structures - an International Journal, Vol. 2, No.6, pp. 461-474, 2002
    14. K.L. Lee, R.F. Shie and K.H. Chang, “ Experimental and Theoretical Investigation of the Response and Collapse of 316L Stainless Steel Tubes Subjected to Cyclic Bending, ” JSME International Journal, Series A , Vol. 48, No.3, pp. 155-162 , 2005
    15. K.H. Chang, W.F. Pan and K.L. Lee, “Mean Moment Effect on Circular Thin-walled Tubes under Cyclic Bending,” International Journal of Structural Engineering and Mechanics, Vol. 28, No.5, PP. 495-514, 2008
    16. 陳建和, “TF-BGA錫球接點熱應力和損壞機制之研究,” 國立成功大學工程科學研究所碩士論文, 2002
    17. 溫從凱, “利用G/L方法探討WLCSP構裝含UBM錫球之疲勞壽命,” 國立成功大學工程科學研究所碩士論文, 2004
    18. R. Mahdavinejad, “Finite element analysis of machine and workpiece instability in turning,” International Journal of Machine Tools and Manufacture, Vol. 45, pp.753-760, 2005
    19. Z. F. Wen, X. S. Jin and W. H. Zhang, “Contact-impact stress analysis of rail joint region using the dynamic finite element method,” Wear, Vol. 258, pp.1301-1309, 2005
    20. M. X. Zhou, Q. A. Huang and Ming Qin, “Modeling, design and fabrication of a triple-layered capacitive pressure sensor,” Sensors and Actuators A：Physical, Vol.117, pp.71-81, 2005
    21. M. M. Teymoori, E. Abbaspour-Sani, “Design and simulation of a novel electrostatic peristaltic micromachined pump for drug delivery application,” Sensors and Actuators A：Physical, Vol.117, pp.222-229, 2005
    22. M. Deiab and S. C. Veldhuis, “Off line simulation system of machining process,” Journal of the Franklin Institute, Vol.344, pp.565-576, 2006
    23. H. Y. Lu and K. P. Chang, “Nonlinear vibration of composite circular plate with a rigid central mass-using direct integration method,” Minghsin Journal, Vol. 33, pp. 227-238, 2007
    24. Z. F. Sui and H. F. Chen, “The application of ansys in stress analysis of heavywalled pipelines fixed at both ends,” Guizhou Chemical Industry, Vol.33, pp.34-37, 2008
    25. 夸克工作室,”Pro Engineer 2001設計實務,”文魁資訊股份有限公司,2003
    26. 康淵,”ANSYS 入門,”全華科技圖書股份有限公司,2004
    27. 李輝煌, ”ANSYS工程分析-基礎與觀念,”高立圖書有限公司, 2005

    下載圖示 校內：2011-06-23公開
    校外：2011-06-23公開
    QR CODE