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研究生:蔡岳廷
研究生(外文):Yueh-Ting Tsai
論文名稱:MARC應用於液靜壓引伸加工問題之分析
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:2006
畢業學年度:94
語文別:中文
論文頁數:74
中文關鍵詞:引伸加工液靜壓成形
外文關鍵詞:hydromechanical deep drawing
相關次數:
  • 被引用被引用:9
  • 點閱點閱:256
  • 評分評分:
  • 下載下載:51
  • 收藏至我的研究室書目清單書目收藏:1
摘要


本文應用MARC有限元素套裝軟體分析軸對稱液靜壓引伸加工問題。為瞭解MARC應用於液靜壓引伸問題的預測性及妥適性,本文首先利用液靜壓引伸的實驗及另一理論結果比較模擬的準確性,並分別探討衝頭圓角半徑、摩擦應力及液壓力歷程等製造參數對成品厚度及成形所需之衝頭負載。其中,配合不同液壓歷程條件以模擬圓杯最終之外形,並利用標準差的方式針對圓杯杯底及圓角處的厚度均勻性來判斷加工條件(即液壓力大小、歷程)是否良窳之標準。
Abstract
This paper is to analyze nonlinear hydromechanical deep drawing process and circular blank of rigid-plastic material. The Cosserat theory and experiment are proved by using the MARC. The objective of this research is to find out the important factors which influence the final blank thickness and punch force. The parameter includes punch radius, friction coefficient and pressure process. The standard deviation is to determine what parameter will affect the final blank thickness evenly.
目錄

頁碼
摘要                           I
目錄                          II
圖表說明     Ⅴ
符號說明 Ⅷ

第一章 緒論             
   1.1 前言                      1
1.2 文獻回顧                    2
1.3 研究動機                 6

第二章 基本理論
2.1 彈塑性有限元素基本觀念 9
2.2 材料性質定義 11
2.3 Update Lagrangian Formulation(ULF)理論 12
2.4 MARC接觸問題的處理 13
2.4.1 接觸之定義 14
2.4.2 接觸之處理程序 15
2.5 摩擦效應之處理 16
2.6網格重新劃分 17
2-7求解非線性代數方程式的方法 18

第三章 MARC有限元素軟體介紹
3.1基本假設 20
3.2 MARC之架構與各部分功能的介紹 21
3.3 MARC應用於液靜壓引伸問題的設定與操作程序 22
3.3.1前處理器 22
3.3.2分析器 24
3-3-3後處理器 25
3.4收斂檢查 25

第四章 結果與討論
4.1 實驗驗證 27
4.2 液靜壓引伸模擬分析 29
4.2.1衝頭圓角半徑的影響 30
4.2.2潤滑的影響 32
4.3 液壓力的影響 33
4.3.1 液壓力大小 33
4.3.2 初始壓力及歷程的影響 34
4.3.3 洩壓的影響 36

第五章 結論與建議
5.1 結論 37
5.2 建議 38
參考文獻 39
附錄 70
參考文獻
[1]N.M. Wang and S.C. Tang, “Analysis of Bending Effects in Sheet Forming Operations”, Int. J. for Num. Meth. in Engng., Vol.25, pp253~267, 1998.
[2] H.B. Shim and D.Y. Yang, “Elastic-Plastic Finite Element Analysis of Deep Drawing Process by Membrane and Shell Elements”, Journal of Manufacturing Science and Engineering, Vol.119,pp.341-349,1997.
[3] Tetsuo Naka and Fusahito Yoshida, “Deep drawability of type 5083 aluminium-magnesium alloy sheet under various conditions of temperature and forming speed”, Journal of Materials Processing Technology v.89 n.1 pt.0 pp.19-23, 1999.
[4] T. H. Choi and H. Huh, “Sheet metal forming analysis of planar anisotropic materials by a modified membrane finite element method with bending effect”, Journal of Materials Processing Technology v.89 n.1 pt.0 pp.58-64, 1999.
[5] H. Takuda, T. Yoshii, N. Hatta, “Finite-element analysis of formability of a magnesium-based alloy AZ31 sheet”, Journal of Materials Processing Technology, Vol 89-90, pp.135-140, 1999.
[6] S.H. Zhang, M.R. Jensen, J. Danckert, K.B. Nielsen, D.C. Kang, L.H. Lang, “Analysis of the hydromechanical deep drawing of cylindrical cups”, Journal of Materials Processing Technology, Vol 103, pp.367-373, 2000.
[7]Anwar Kandil, “An experimental study of hydroforming deep drawing”, Journal of Materials Processing Technology, Vol 134, pp.70-80, 2003.
[8]Shi-Hong Zhang, Li-Xin Zhou, Zhong-Tang Wang, Yi Xu, “Technology of sheet hydroforming with a movable female die”, International Journal of Machine Tools & Manufacture, Vol 43, pp.781-785, 2003.
[9] Fuh-Kuo Chen, Tyng-Bin Huang, Chih-Kun Chang, “Deep drawing of square cups with magnesium alloy AZ31 sheets”, International Journal of Machine Tools & Manufacture, Vol 43, pp.1553-1559, 2003.
[10]Lihui Lang, Joachim Danckert, Karl Brian Nielsen, “Study on hydromechanical deep drawing with uniform pressure onto the blank”, International Journal of Machine Tools & Manufacture, Vol 44, pp.495-502, 2004.
[11] Kang Dachang, Chen Yu, Xu Yongchao, “Hydromechanical deep drawing of superalloy cups”, Journal of Materials Processing Technology, Vol 166, pp.243-246, 2005.
[12] Lihui Lang, Joachim Danckert, Karl Brian Nielsen, “Investigation into hydrodynamic deep drawing assisted by radial pressure PartⅡ. Numerical analysis of the drawing mechanism and the process parameters”, Journal of Materials Processing Technology, Vol 166, pp.150-161, 2005.
[13]H.D. Hibbitt, P.V. Marcal and J.R. Rice, “A Finite Element Formulation for problems of large strain and large displacement”, Int. J. Soilds Struct., Vol 6 pp.1069-1086, 1970.
[14] R.M. Mcmeeking and J.R. Rice, “Finite Element Formulation for Problem of Large elastic-plastic deformation”, Int. J. Soilds Struct. , Vol 11, pp.601-616, 1975.
[15]“Theory and user information”, MARC Analysis Research Corporation. Volume A. Version K7.
[16] A.Peled, M.B. Rubin, J. Tirosh, “Analysis of blank thickening in deep drawing processes using the theory of a Cosserat generalized membrane”, Journal of the Mechanics and Physics of Solids, Vol 52, pp.317-340, 2004.
[17]白賜清, “品質管制之統計分法”, 中華民國品質管制學會發行, 1981.
[18]楊文龍, “軸對稱引伸加工問題之有限元素分析”, 碩士論文, 國立中央大學機械工程研究所, 2002.
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