以實驗方法建立圓環鍛粗加工的異向性摩擦模型及其驗證

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姓名

葉哲宇(zhe-yu Ye) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

以實驗方法建立圓環鍛粗加工的異向性摩擦模型及其驗證
(Establish the anisotropy friction model of ring upsetting and verification by experimental method)

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摘要(中)

在鍛粗過程中模具與材料之間的摩擦為影響變形的主因之一，為了瞭解摩擦所造成的不均勻變形(異向性變形)。本文利用車削、銑削及研磨作出定性、定量的模具與不同的表面形貌的詴片來進行圓環鍛粗加工實驗，在有潤滑條件下研究模具與詴片因表面相互影響所產生的異向性變形，以實驗方法建立一個圓環鍛粗加工的異向性摩擦模型。並且結合有限元素作分析，以不同的幾何外型(圓柱)驗證，比較端面輪廓與桶脹輪廓是否精確。如此可有效的預測因摩擦產生的異向性變形，來達到節省成本的目的。

摘要(英)

In the process of upsetting, one of the main reason of deformation is friction, for understand the anisotropy deformation by friction. We make different surface morphology specimen and mold, used turning, milling and grind. Conduct ring upsetting experiment at lubricating environment research surface affect anisotropy deformation by specimen and mold, used experiment establish a anisotropy deformation model. Combine finite element analysis, verification different geometry(cylinder). Compare specimen surface profile and bulged profile. Forecast anisotropy deformation by friction

關鍵字(中)

★ 鍛粗
★ 摩擦
★ 異向性
★ 有限元素分析

關鍵字(英)

★ finite element analysis
★ anisotropy
★ friction
★ Upsetting

論文目次

摘要...................................................... i
Abstract ................................................ ii
誌謝 ................................................... iii
目錄 .................................................... iv
表目錄 .................................................. vii
圖目錄 ................................................. viii
第一章緒論 ............................................... 1
1-1 前言 ................................................. 1
1-2 文獻回顧 .............................................. 2
1-3 研究目的與動機 ......................................... 7
1-4 本文流程架構 ........................................... 8
第二章實驗方法與步驟 ....................................... 9
2-1實驗方法 ............................................... 9
2-1-1詴片規格與準備 ....................................... 10
2-1-2機械性質測詴-MTS 拉伸詴驗...............................10
2-2實驗步驟與條件 ......................................... 12
2-3量測.................................................. 13
2-3-1 CCD內外徑量測....................................... 14
2-3-2 表面輪廓之量測及繪製.................................. 14
2-3-3 側向桶脹輪廓量測..................................... 15
第三章有限元素分析 ........................................ 16
3-1 有限元素法於塑性加工上之應用 ............................. 16
3-1-1 塑性加工之迭代準則 ................................... 18
3-2 DEFORM 有限元素軟體 ................................... 19
3-2-1 DEFORM軟體介紹 ..................................... 19
3-2-2 DEFORM使用流程 ..................................... 22
3-3 DEFORM模擬參數 ....................................... 24
3-3-1 摩擦異向性 ......................................... 25
第四章結果與討論 .......................................... 27
4-1圓環鍛粗實驗結果 ........................................ 27
4-2摩擦異向性模式-數學關係式 ................................ 28
4-3圓環鍛粗實驗結果及理論驗證 ............................... 30
4-4圓柱鍛粗實驗結果與理論驗證 ............................... 31
4-4-1圓柱端面輪廓 ......................................... 31
4-4-2圓柱桶脹輪廓 ......................................... 32
第五章結論與建議 .......................................... 33
5-1 結論 ................................................ 33
5-2 建議 ................................................ 34
參考文獻 ................................................. 35
附錄一.....................................................76
附錄二.....................................................77
附錄三.....................................................78
附錄四.....................................................79
附錄五.....................................................80
附錄六.....................................................81

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指導教授

葉維磬(Wei-Ching Yeh)

審核日期

2011-7-23

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