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研究生:謝政男
研究生(外文):Jeng-nan Shie
論文名稱:MARC應用於非對稱壓延加工之力學行為分析
論文名稱(外文):Investigation of Asymmetrical Rolling Mechanics Behavior by MARC simulation
指導教授:葉維磬
指導教授(外文):Wei-Ching Yeh
學位類別:碩士
校院名稱:國立中央大學
系所名稱:機械工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:144
中文關鍵詞:內彎矩壓延有限元素
外文關鍵詞:rollinginternal momentfinite element
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由於非對稱壓延具有可有效降低壓延負荷、材料於壓延製程的安排上,更趨自由及多樣性等優點,於壓延工業上之應用有極大的助益,故本文使用有限元素軟體MARC,以A1050鋁板在同徑異周速的非對稱條件下,討論在各縮減率與周速比下對壓延負荷、壓延扭矩及壓延後板材曲率的影響。而在壓延製程中,板材的內部有彎矩產生,但在實務壓延過程中很難得知因輥輪作用在板材內部所產生的彎矩,因此本文利用有限元素套裝軟體MARC模擬分析後所產生的在板材內部節點應力,將此節點應力透過數學程式計算分析板材壓延過程中在輥輪間隙塑性變形區所產生在板材內部的彎矩,以了解在材壓延過程中所產生的板材內部彎矩分佈情形。
Asymmetrical rolling can decrease the rolling force and the arrangement of material that makes the rolling more free and variables, it brings great benefits in the industry. In this paper, asymmetrical rolling is simulated by using the finite element software MARC and discussing rolling force, rolling torque as well as curvature of the specimens by difference peripheral speed ratio in asymmetrical rolling conditions. In the process of rolling simulation, there is internal moment in the sheet of roll gap and analyze the internal nodes stress by using finite element software MARC, because it’s hard to find out the internal moment of rolling sheet in experiment. Therefore, the Mathematics program analyze the internal moment of plastic region by node stress that will be calculated the internal moment distributed in rolling process.
摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vi
第一章 緒論 1
1-1 前言 1
1-2 板材之非對稱壓延 2
1-3 塑性加工解析法 3
1-4 研究動機 5
1-5 文獻回顧 6
第二章 基本理論 16
2-1 有限元素基本觀念 16
2-1-1 有限元素求解程序 16
2-1-2 非線性有限元素法 18
2-2 Update Lagrangian Formulation 19
2-3 MARC接觸問題的處理 20
2-3-1 接觸之定義 21
2-3-2 接觸面摩擦效應之處理 23
2-4平面線性等參數元素(The Plane Linear Isoparametric Element) 24
第三章 MARC有限元素軟體介紹與應用 27
3-1 MARC程式編輯 27
3-2 MARC 分析求解技術定義 28
3-2-1 參考座標系統 28
3-2-2 非線性代數方程組疊代求解方法 29
3-3 基本假設 31
3-4 MARC應用於壓延成形問題之設定與操作程序 32
3-4-1 前處理 32
3-4-2 分析 33
3-4-3 後處理 34
3-5 收斂檢查 35
3-6 板材曲率計算方式 36
3-7 數學程式計算說明 37
3-7-1 板材內部彎矩之說明 37

3-7-2 數學程式計算流程與作法 38
3-7-2-1 擷取MARC資料 38
3-7-2-2 利用平面線性等參數元素計算出口端截面之質點應力 38
3-7-2-3 在出口端截面上彎矩之計算 40
3-7-2-4 在出口端與塑性變形區的彎矩計算 41
3-7-2-5 出口端與離開出口端板材內部之彎矩計算 44
第四章 結果與討論 47
4-1 實驗驗證 48 4-1-1 壓延負荷理論值與實驗值比較 49
4-1-2 壓延扭矩理論值與實驗值比較 49
4-1-3 壓延板材曲率理論值與實驗值比較 49
4-2 分析結果與探討 51
4-2-1 壓延負荷和周速比的關係 52
4-2-2 壓延板材曲率和縮減率、周速比的關係 52
4-2-3 板材在塑性變形區彎矩的分佈 53
4-2-4 板材在離開出口端彎矩的分佈 55
第五章 結論與建議 56
5-1 結論 56
5-2 建議 57
參考文獻 58
附錄 87
附件1 90
附件2 92
附件3 93
附件4 108
附件5 112
附件6 117
附件7 122
附件8 125
附件9 127
[1] 張安心, 邱雲堯, 陳佳萬, “機械製造, ”文京圖書, p.13-2, 1998.
[2] Hosford, W.F., Caddell, R.M.,“Metal forming-mechanics and metallurgy, ” Prentice-Hall, Inc., N.,1983.
[3] Kobayashi S.Oh, S.I., Altan.T,“Metal forming and the finite-element method, ” Oxford university press, 1989.
[4] W.Johnson, G.Needham, ”Further experiments in asymmetrical rolling,” International Journal of Mechanical Science, Vol.8, p.443-455, 1966.
[5] N.Kamii, R.Terakado,“Study of the rolling-method of hot finishing tandem mill by rolls with different dimaeters, ”J.JSTP, Vol.17, p.966-972, 1976.
[6] K.Nakajima, “An investigation of rolling property by rolling experiment in asymmetrical strip rolling, ”Proc.s-53 Sp.Conf.of JSTP, p.25-28, 1978.
[7] K.Nakajima, H.Yamamoto, “Effects of frictional coefficient on asymmetrical strip rolling, ”Proc.the 31th Joint Conf.of JSTP, p.451-454, 1980.
[8] D.Pan, D.H.Sansome, “An experimental study of the effect of roll speed mismatch on the rolling load during the cold rolling of the thin strip, ”Journal of Mechanical Working Technology, Vol.6, p.361-377, 1982.
[9] M.Salimia, F.Sassani,“Modified slab analysis of asymmetrical plate rolling, ”International Journal of Mechanical Sciences, Vol.44, p.1999-2023, 2002.
[10] M.Salimi, M.Kadkhodaei,“Slab analysis of asymmetrical sheet rolling, ”International Journal of Mechanical Sciences, Vol.150, p.215-222, 2004.
[11] G.Sachs, L.J.Klingler,“The flow of metals through tools of circular contour, ”J.Applied Mechanics, Vol.14, p.88-98, 1947.
[12] C.F.Zorowski, A.Shutt,“Analysis of the load and torque characteristics of single-roll-drive mills, ”International Research in Production Engineering, p.380-387, 1963.
[13] E.Orowan, “The calculation of roll pressure in hot and cold flat rolling, ” Proceedings of the Institution of Mechanical Engineers, Vol.150, p.140-167, 1943.
[14] W.Johnson, G.Needham,“An experimental study of asymmetrical rolling, ”Proceedings of the Institution of Mechanical Engineers,Vol.180, p.270-281, 1966.
[15] W.Johnson, G.Needham,“Further experiments in asymmetrical rolling, ”International Journal of Mechanical Science, Vol.8, p.443-455, 1966.
[16] D.Pan, D.H.Sansome,“An experimental study of the effect of roll speed mismatch on the rolling load during the cold rolling of the thin strip, ”Journal of Mechanical Working Technology, Vol.6, p.361-377, 1982.
[17] J.Pospiech,“A note on the influence of some factors affecting curvature in the flat rolling of strip, ”Journal of Mechanical Working Technology, Vol.15, p.69-80, 1987.
[18] R.Shivpuri, P.C.Chou, C.W.Lau,“Finite element investigation of curling in non-symmetrical rolling of flat stock, ”International Journal of Mechanical Sciences, Vol.30, p.625-635, 1988.
[19] 鄒國益, “應用切片法於非對稱板材壓延之研究, ”博士論文, 國立中山大學機械工程研究所, 1995.
[20] Lenard J.G., “Friction in cold rolling of a low carbon steel with lubricants, ”Journal of Materials Processing Technology, Vol.99, p.86-93, 2000.
[21] 陳狄成, “應用有限元素法於缺陷板材壓延加工之解析, ”博士論文, 國立中山大學機械與機電工程學系, 2003.
[22] H.Danesh Manesh, A.Karimi Taheri, “An investigation of deformation behavior and bonding strength of bimetal strip during rolling, ”Mechanics of Materials, Vol.37, p.531-542, 2005.
[23] F.Farhat-Nia, M.Salimi, M.R.Movahhedy, “Elasto-plastic finite element simulation of asymmetrical plate rolling using an ALE approach, ”Journal of Materials Processing Technology, Vol.177, p.525-529, 2006.
[24] S.A.A.Akbari Mousavi, S.M.Ebrahimi and R.Madoliat,“Three dimensional numerical analyses of asymmetric rolling, ”Journal of Materials Processing Technology, Vol.187-188, p.725-729, 2007.
[25] M.Philipp, W.Schwenzfeier, F.D.Fischer, R.Wodlinger, C.Fisher,“Front end bending in plate rolling influenced by circumferential speed mismatch and geometry, ”Journal of Materials Processing Technology, Vol.184, p.224-232, 2007.
[26] LIU Xiang-hua, SHI Xu,“FEM analysis of rolling pressure along strip width in cold rolling process, ”Journal of Iron and Steel Research, Vol.14, p.22-26, 2007.
[27] LI Yu-gui, HUANG Qing-xue, “Simulation of strip rolling using elastoplastic contact BEM with friction, ”Journal of Iron and Steel Research, Vol.15, p.34-38, 2008.
[28] SUN Jing-na, HUANG Hua-gui, “Nonlinear finite element analysis of thin strip temper rolling process, ”Journal of Iron and Steel Research, Vol.16, p.27-32, 2009.
[29] DU Feng-shan, WANG Gui-guo, “Friction model for strip rolling, ”Journal of Iron and Steel Research, Vol.17, p.19-23, 2010.
[30] WANG Xue-song, PENG Yan,“A 3-D differential method for solving rolling force of PC hot strip mill, ”Journal of Iron and Steel Research, Vol.17, p.36-39, 2010.
[31] 魏上超, "非對稱壓延加工參數對板材彎曲行為之實驗研究, "國立中央大學機械工程研究所碩士論文, 2010.
[32] H.D.Hibbitt, P.V.Marcal and J.R.Rice,“A finite element formulation for problems of large strain and large displacement, ” International Journal of Solids and Structures, Vol.6, p.1069-1086, 1970.
[33] R.M.McMeeking, J.R.Rice,“Finite element formulations for problems of large elastic-plastic deformation, ” International Journal of Solids and Structures, Vol.11, p.601-616, 1975.
[34]“Theory and user information, ”MARC Analysis Research Corporation, Volume A, Version K7.
[35]“Mentat Command Reference, ”MARC Analysis Research Corporation. Version 3.1, pp.3-345~3-350.
[36] 江卓培, “漸開線外齒輪鍛造之有限元素分析, ”碩士論文, 國立中央大學機械所, 1999.
[37] 陳火紅,“新編Marc有限元實例教程, ”機械工業出版社, p.21, 2007.
[38] 陳昱良,“MARC應用於非對稱壓延加工問題之分析, ”碩士論文, 國立中央大學機械所, 2005.
[39] Beer Ferdinand Pierre, “Mechanics of materials, ”McGraw-Hill, 1992.
[40] 陳育川, “非對稱壓延板材彎曲變化之實驗研究, ”碩士論文, 國立中央大學機械所, 1996.
[41] RobertD.Cook,“Concepts and applications of finite element analysis, ”Wiley, 1951.
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