進階搜尋


   電子論文尚未授權公開,紙本請查館藏目錄
(※如查詢不到或館藏狀況顯示「閉架不公開」,表示該本論文不在書庫,無法取用。)
系統識別號 U0026-0907201315431700
論文名稱(中文) 有限元素分析局部尖銳凹槽圓管在循環彎曲負載下之行為
論文名稱(英文) Finite Element Analysis on the Response of Local Sharp-Notched Circular Tubes under Cyclic Bending
校院名稱 成功大學
系所名稱(中) 工程科學系碩博士班
系所名稱(英) Department of Engineering Science
學年度 101
學期 2
出版年 102
研究生(中文) 洪揚銘
研究生(英文) Yang-Ming Hung
學號 N96004214
學位類別 碩士
語文別 中文
論文頁數 63頁
口試委員 指導教授-潘文峰
口試委員-陳蓉珊
口試委員-張高華
口試委員-洪兆宇
口試委員-李國龍
中文關鍵字 有限元素分析  局部尖銳凹槽  循環彎曲負載 
英文關鍵字 Finite element analysis  local sharp-notched  cyclic bending 
學科別分類
中文摘要 本研究是以有限元素軟體ANSYS Workbench 14.0分析,局部尖銳凹槽SUS304不鏽鋼圓管承受對稱曲度循環彎曲負載下之力學行為。其中所考慮的局部尖銳凹槽的深度有:0.2、0.4、0.6、0.8和1.0 mm,所考慮的局部尖銳凹槽的方向有:0、30、60和90度,而分析的行為包含有:彎矩-曲度及橢圓化-曲度關係。ANSYS分析結果顯示,尖銳凹槽的深度對彎矩-曲度的關係幾乎沒有影響,但橢圓化-曲度關係則隨著凹槽深度增加,不對稱的現象會越加明顯,且橢圓化增加的速度也會越快。當考慮凹槽深度固定為1.0 mm時,不同凹槽方向對彎矩-曲度關係的影響也不太明顯,但橢圓化-曲度關係,則隨角度增加不對稱的現象會趨於對稱。此外,本研究的ANSYS分析也與實驗結果進行比較,結果顯示模擬數值雖與實驗值有些許差異,但兩者的趨勢卻非常相似。
英文摘要 In this study, the finite element software ANSYS Workbench 14.0 is used to analyze the mechanical behavior of local sharp-notched SUS304 stainless steel tubes under curvature-controlled cyclic bending. The local sharp-notched depths include: 0.2, 0.4, 0.6, 0.8 and 1.0 mm, and the local sharp-notched directions include: 0, 30, 60 and 90 degree, the analysis behaviors include: moment-curvature and ovalization-curvature relationships. According to the analysis result, the notch depth has no influence on the moment-curvature relationship. But the notch depth increases, the unsymmetrical phenomenon of the ovalization-curvature relationship becomes increasingly obvious and the speed of ovalization also increases. When we consider a constant notch depth of 1.0 mm, the notch direction has no influence on the moment-curvature relationship. But the ovalization-curvature relationship becomes symmetrical when the angle increases. In addition, the ANSYS analysis is compared with the experimental data. Although some differences between the experimental and simulated results, but the trends are very similar between the two.
論文目次 摘要I
AbstractII
誌謝III
目錄IV
表目錄VII
圖目錄VIII
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2
1-3 論文內容8
第二章 理論基礎9
2-1 有限元素分析法【19】9
2-2 塑性理論介紹【20】11
2-3 ANSYS有限元素分析軟體介紹【21】【22】17
2-3-1 前處理(pre-processing)17
2-3-2 有限元素分析(finite element analysis)19
2-3-3 後處理(post-processing)20
2-4 ANSYS Workbench操作介面介紹【23】21
第三章 ANSYS Workbench分析26
3-1 材料參數設定26
3-2 有限元素模型之建立27
3-2-1 幾何模型28
3-2-2 網格分割30
3-2-3 元素說明【25】32
3-3 邊界條件與負載設定33
3-3-1 邊界條件設定 33
3-3-2 負載設定34
3-4 求解過程37
第四章 ANSYS分析結果39
4-1 實驗介紹39
4-2 彎矩與曲度關係39
4-2-1 實驗結果39
4-2-2 ANSYS分析結果41
4-3 橢圓化與曲度關係46
4-3-1 實驗結果46
4-3-2 ANSYS分析結果51
4-4 ANSYS分析尖銳凹槽方向對橢圓化之影響56
4-5 網格精度對彎矩和橢圓化之影響57
第五章 結論59
參 考 文 獻61
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.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
11.K. H. Chang and W. F. Pan, “Buckling life estimation of circular tubes under cyclic bending,"International Journal of Solids and Structures, Vol.46, Issue 2, pp.254-270, 2009
12.翁弘杰,「尖銳凹槽圓管在循環彎曲負載下平均曲率對皺曲行為影響之實驗研究」,國立成功大學工程科學研究所碩士論文,2011
13.林俊宏,「有限元素ANSYS分析圓管在循環彎曲負載下之力學行為」,國立成功大學工程科學研究所碩士論文,2006
14.蘇文彥,「有限元素ABAQUS分析圓管在循環彎曲負載下之力學行為」,國立成功大學工程科學研究所碩士論文,2006
15.解智翔,「有限元素ANSYS分析尖銳凹槽薄壁管在循環彎曲負載下之力學行為」,國立成功大學工程科學研究所碩士論文,2008
16.林煒凱,「有限元素ANSYS分析橢圓形凹槽薄壁管在循環彎曲負載下之力學行為」,國立成功大學工程科學研究所碩士論文,2008
17.趙國鈞,「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」,國立成功大學工程科學研究所碩士論文,2009
18.葉弘文,「有限元素分析尖銳凹槽SUS304不鏽鋼圓管在循環彎曲負載下之力學行為」,國立成功大學工程科學研究所碩士論文,2012
19.Sadd. Martin H., “Elasticity, 2nd Edition Theory, Applications, and Numerics,"Academic Press, USA, 2009
20.丁大鈞,工程塑性力學,南京工學院出版社,1986
21.李輝煌,ANSYS工程分析-基礎與觀念,高立圖書有限公司,2005
22.林敬銘,「架空移動式起重機結構強度分析及桁架最佳化設計」, 國立成功大學工程科學研究所碩士論文,2010
23.Huei-Huang Lee, “Finite Element Simulations with ANSYS Worckbench 12,"GOTOP INFORMATION INC.., Taiwan, 2010
24.Kim JR Rasmussen and MScEng, “Full-range Stress-strain Curves for Stainless Steel Alloys,"Department of Civil Engineering Research Report No R811, 2001
25.“ANSYS Structural Analysis Guide, Release 14.0,"ANSYS, Inc., 2011
26.蔡建弘、劉穎哲,「局部尖銳凹槽SUS304不鏽鋼圓管在循環彎曲負載下之力學行為」,國立成功大學工程科學系工程材料力學分析實驗室, 2013
論文全文使用權限
  • 同意授權校內瀏覽/列印電子全文服務,於2018-07-18起公開。


  • 如您有疑問,請聯絡圖書館
    聯絡電話:(06)2757575#65773
    聯絡E-mail:etds@email.ncku.edu.tw