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研究生:張育生
研究生(外文):Yu-ShengChang
論文名稱:尖銳凹槽圓管在純彎曲負載下潛變行為之實驗研究
論文名稱(外文):Experimental Study on Creep Response of Sharp-Notched Circular Tubes Under Pure Bending
指導教授:潘文峰
指導教授(外文):Wen-Feng Pan
學位類別:碩士
校院名稱:國立成功大學
系所名稱:工程科學系碩博士班
學門:工程學門
學類:綜合工程學類
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:77
中文關鍵詞:尖銳凹槽純彎曲潛變
外文關鍵詞:sharp-notchedpure bendingcreep
相關次數:
  • 被引用被引用:3
  • 點閱點閱:155
  • 評分評分:
  • 下載下載:4
  • 收藏至我的研究室書目清單書目收藏:0
本文是針對尖銳凹槽深度為0.2、0.4、0.6、0.8及1.0mm的SUS 304不銹鋼圓管進行純彎曲潛變的實驗,以探討其相關的力學行為與皺曲毀損。圓管純彎曲潛變係指圓管被彎曲至某個預設彎矩後,並維持該彎矩一段時間。由實驗結果得知,潛變曲度與橢圓化皆會隨著時間的增加而增加,直至皺曲毀損為止,且在較高的預設彎矩值下,潛變曲度與橢圓化的值增加的較快。最後,本文參考Bailey-Norton的單軸潛變公式後,提出一個可以描述SUS 304不銹鋼圓管在承受純彎曲負載下潛變行為的初始段與第二階段潛變曲度-時間的關係。在經由與實驗數值做比較後發現,理論分析能合理的描述實驗結果。
In this study, the relative mechanical behavior and buckling failure of sharp-notched SUS 304 stainless steel tubes with notch depths of 0.2, 0.4, 0.6, 0.8 and 1.0 mm subjected to pure bending creep are investigated. The pure bending creep is to bend the tube to a desired moment and keep that moment for a period of time. From the experimental result, the creep curvature and ovalization increase with time until the tube buckles. Higher desired moment leads to the higher creep curvature and ovalization. Finally, referring the Bailey-Norton formulation for uniaxial creep, a formulation is proposed for simulating the first and second stages of the creep curvature – time for SUS 304 stainless steel tubes subjected to pure bending creep. Through comparing with the experimental finding, the theoretical analysis can reasonably describe the experimental result.
摘要I
AbstractII
誌謝III
目錄IV
表目錄VI
圖目錄VII
符號說明X
第一章 緒論1
1-1 研究動機1
1-2 文獻回顧2
1-3 研究目的10
第二章 實驗設備12
2-1整體設備12
2-2 彎管實驗機台16
2-3 油壓伺服控制系統19
2-4 電腦監控系統22
2-5 檢測儀器24
2-6 整體效能29
第三章 實驗方法45
3-1 實驗原理45
3-2 實驗方式46
3-3 實驗材料47
3-4 實驗流程47
3-5 實驗數據整理51
3-6 注意事項54
第四章 實驗結果與理論分析61
4-1 實驗結果61
4-1-1純彎曲潛變前階段62
4-1-2純彎曲潛變階段62
4-2理論分析64
第五章結論72
參考文獻74
自述77

1.Shaw, P. K. and Kyriakides, S., 1985, “Inelastic Analysis of Thin-Walled Tubes under Cyclic Bending, International Journal of Solids and Structures, Vol. 21, pp. 1073-1100.
2.Kyriakides, S. and Shaw, P. K., 1987, “Inelastic Buckling of Tubes under Cyclic Bending, Journal of Pressure Vessel Technology, Vol. 109, pp.169-178.
3.Corona, E. and Kyriakides, S., 1988, “On the Collapse of Inelastic Tubes under Combined Bending and Pressure, International Journal of Solids and Structures, Vol. 24, pp. 505-535.
4.Corona, E. and Kyriakides, S., 1991, “An Experimental Investigation Degradation and Buckling of Circular Tubes under Cyclic Bending and External Pressure, Thin-Walled Structures, Vol. 12, pp. 229-263.
5.Ju, G. T. and Kyriakides, S., 1992, “Bifurcation Buckling Versus Limit Load Instabilities of Elastic-Plastic Tubes under Bending and External Pressure, Journal of Offshore Mechanics and Arctic Engineering, Vol. 113, pp. 43-52.
6.Pan, W. F., Wang, T. R. and Hsu, C. M., 1998, “A Curvature- Ovalization Measurement Apparatus for Circular Tubes under Cyclic Bending, Experimental Mechanics, Vol. 38, No.2, pp. 99-102.
7.Pan, W. F., and Her Y. S., 1998, “Viscoplastic Collapse of Thin-Walled Tubes under Cyclic Bending, ASME Journal of Engineering Materials and Technology, Vol. 120, pp. 001-004.
8.Pan, W. F. and Fan, C. H., 1998, “An Experimental Study on the Effect of Curvature-Rate at Preloading Stage on Subsequent Creep or Relaxation of Thin-Walled Tubes under Pure Bending, JSME International Journal, Series A, Vol. 41, No.4, pp. 525-531.
9.Lee, K. L., Pan, W. F. and Kuo, J. N., 2001, “The Influence of the Diameter-to-Thickness Ratio on the Stability of Circular Tubes under Cyclic Bending, International Journal of Solids and Structures, Vol.38, pp. 2401-2413.
10.Pan, W. F., and Lee, K. L., 2002, “The Effect of Mean Curvature on the Response and Collapse of Thin-Walled Tubes under Cyclic Bending, JSME International Journal, Series A, Vol. 45, No.2, pp. 309-318.
11.Lee, K. L. and Pan, W. F., 2002, “Pure Bending Creep of SUS 304 Stainless Steel Tuber, Steel and Composite Structures - an International Journal, Vol. 2, No.6, pp. 461-474.
12.Chang, K. H. Pan, W. F. and Lee, K. L., 2009 “Mean moment effect of thin-walled tubes under cyclic bending,Structural Engineering and Mechanics – an International Journal, Vol. 28, No. 5, pp. 495-514.
13.K. L. Lee, 2010 “Mechanical Behavior and Buckling Failure of Sharp-notched Circular Tubes under Cyclic Bending, International Journal of Structural Engineering and Mechanics (SCI), Vol. 34, No. 3, pp. 367-376
14.翁弘杰,2011,「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所碩士論文。

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