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研究生: 李慶峰
Lee, Ching-Feng
論文名稱: 316 L不銹鋼圓管在不同彎曲曲度率循環彎曲負載下對皺曲行為影響之實驗研究
Experiment Investigation for the Buckling of Circular Tubes with Different Curvature Rate under Cyclic Bending
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: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 73
中文關鍵詞: 循環彎曲彎曲曲度率不銹鋼管
外文關鍵詞: stainless steel, cyclic bending, bending curvature rate
相關次數: 點閱:152下載:15
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  •   本文主要是針對三種不同的彎曲曲度率利用『彎管試驗機』及『曲度-橢圓化量測器』以控制對稱曲度的方式,對316L不銹鋼圓管進行循環彎曲負載試驗。實驗中的三種彎曲曲度率在控制不同循環曲度範圍下,來觀察彎曲力矩、斷面橢圓化、循環至皺曲所需圈數以及橢圓化臨界值之間的關係。
    由實驗結果中可以看出,在不同的彎曲曲度率作用下,所施加的彎曲曲度率越大,在相同的控制曲度下需要比較大的彎曲力矩而圓管斷面橢圓化的增加速度隨著所施加的彎曲曲度率的增加而增加,在高彎曲曲度率作用下,每一圈的橢圓化增加量比在低彎曲曲度率作用下的橢圓化增加量來的多。316L不銹鋼管循環到到皺曲時,以高彎曲曲度率作用下所得到的橢圓化臨界值比低彎曲曲度率作用下的橢圓化臨界值來的高。在考慮對數座標下,其控制曲度量與發生皺曲所需循環圈數呈線性的關係,且三種彎曲曲度率所呈現的三條直線幾乎平行。

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    摘要…………………………………………………………I 誌謝…………………………………………………………II 目錄…………………………………………………………III 表目錄………………………………………………………VI 圖目錄………………………………………………………VII 符號說明……………………………………………………XI 第一章 緒論 …………………………………………1 1.1 前言 ………………………………………………1 1.2 文獻回顧 …………………………………………3 1.3 研究目的 …………………………………………10 第二章 實驗設備 ……………………………………12 2.1 整體設備 …………………………………………12 2.1.1 彎管試驗機本體 ……………………………14 2.1.2 油壓伺服控制設備 …………………………17 2.1.3 電腦監控系統 ………………………………19 2.1.4 檢測儀器 ……………………………………21 2.2 實驗機組裝功能 …………………………………22 第三章 量測裝置 ……………………………………24 3.1 曲度檢測器使用原理 ……………………………24 3.2 管徑檢測器使用原理 ……………………………25 3.3 力檢測器 …………………………………………27 第四章 實驗方法 ……………………………………28 4.1 實驗原理 …………………………………………28 4.2 實驗材料 …………………………………………29 4.3 實驗方法 …………………………………………29 4.4 實驗數據整理 ……………………………………32 4.5 實驗注意事項 ……………………………………33 第五章 結果與討論 …………………………………35 5.1 循環彎曲的力學行為 ……………………………35 5.1.1 彎矩(M)-曲度(k)關係圖 ……………………35 5.1.2 橢圓化(ΔD/D)-曲度(k)關係圖 ……………36 5.2 循環彎曲的皺曲損壞 ……………………………37 第六章 結論 …………………………………………39 6.1 總結 ………………………………………………39 6.2 建議與心得 ………………………………………41 參考文獻……………………………………………………71 自述

    1.Kyriakides, S. and Shaw, P. K , “Response and Stability of Elastoplastic Circular Pipes Under Combined Bending and External Pressure,” International Journal of Solids and Structures, Vol. 18, pp. 957-973 , 1982.

    2.Shaw, P. K. and Kyriakides, S. “Inelastic Analysis of Thin-Walled Tubes Under Cyclic Bending,” International Journal of Solids and Structures, Vol. 21, pp. 1073-1100 ,1985.

    3.Kyriakides, S. and Shaw, P. K., “Inelastic Buckling of Tubes Under Cyclic Bending,” Journal of Pressure Vessel Technology, Vol. 109, pp. 169-178 , 1987.

    4.Corona, E. and Kyriakides, S. “On the Collapse of Inelastic Tubes UnderCombined Bending and Pressure,” International Journal of Solids and Structures, Vol. 24, pp. 505-535 ,1988.

    5.Corona, E. and Kyriakides, S,“An Experimental Investigation Degradation and Buckling of Circular Tubes Under Cyclic Bending and External Pressure,” Thin-Walled Structure, Vol.12, pp. 229-263, 1991.

    6.Ju, G. T. and Kyriakides, S. “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 ,1991.

    7.Corona, E. and Vaze, S. P. “Buckling of Elastic-Plastic Square Tubes Under Bending,” International Journal of Mechanics and Science, Vol. 38, pp. 753-775 ,1996.

    8.Pan W. F. and Leu K. T., “Endochronic Analysis for Viscoplastic Collapse of a Thin-Walled Tube under Combined Bending and External Pressure, ” JSME International Journal, Series A, Vol. 40, No. 2, pp. 189-199 , 1997.

    9.Pan W. F, Wang T. R. and Hsu C. M. Hsu, “A Curvature-Ovalization Measurement Apparatus for Circular Tubes under Cyclic Bending, ”Experimental Mechanics, Vol. 38, No.2, pp. 99-102 , 1998.

    10.Pan W. F. and Her Y. S ,“Viscoplastic Collapse of Thin-Walled Tubes Under Cyclic Bending” Journal of Engineering Materials and Technology Vol.120, pp. 001-004 , 1998.

    11.Pan W. F. and Fan C. H, “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 , 1998.

    12.Lee Kuo-Long, Pan Wen-Fung, Kuo Ju-Nan ,“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 , 2001.

    13.Lee Kuo-Long and Pan Wen-Fung, “Viscoplastic Collapse of Titanium alloy Tube Under Cyclic Bending,” International Journal of Structural Engineering and Mechanics, Vol. 11, No. 3, pp. 315-324, 2001.

    14.Lee K. L, Pan W. F. and Hsu C. M, “Collapse of Circular under Pure Bending Creep,” Journal of the Chinese Society of Mechanical Engineers, Vol. 22, No. 3, pp. 249-255, 2001.

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