鎂合金管材在溫間加工時擁有較好的成形性。本研究以有限元素軟體DEFORM 3D模擬鎂合金AZ61管材於150℃及250℃下T型液壓鼓脹之成形結果並進行鼓脹成形實驗。經由負載路徑之修正，獲得較均一之管件厚度分佈及支管高度為49MM之產品。並將解析值與實驗值作比較，驗證了解析模式之適用性。另外針對y型鼓脹成形，探討入模半徑對於管材成形性之影響。從模擬結果可知右側入模半徑r1＝10mm，左側入模半徑r2＝30mm有利於管件成形。

Magnesium alloy tubes have good formability at elevated temperatures. In this study, a finite element code DEFORM 3D is used to simulate the result of T-shape hydroforming at working temperatures 150℃ and 250℃ with magnesium alloy AZ61 tubes and then conducts the hydroforming experiments. By modifying the loading paths, products with uniform thickness and branch height are obtained 49mm. The results of simulation are compared with the experimental results to verify the validity of this modeling. On the other hand, the effects of the die fillet radius on tube formability during y-shape hydroforming are discussed. With the right die fillet radius r1＝10mm and the left die fillet radius r2＝30mm, a better formability of the tube is obtained.

中文摘要..................................................................................I
英文摘要.................................................................................II
目錄........................................................................................III
表目錄.....................................................................................V
圖目錄....................................................................................VI
符號說明................................................................................XI
第一章 序論............................................................................1
1-1 前言............................................................................1
1-2 管材溫間液壓成形製程之簡介............................... 3
1-3 文獻回顧....................................................................7
1-3-1 常溫液壓成形之文獻探討...................................7
1-3-2 溫間液壓成形之文獻探討...................................8
1-4 研究動機與論文架構..............................................10
第二章 有限元素法與模擬軟體Deform之介紹................15
2-1 前言..........................................................................15
2-2 有限元素法之基本理論..........................................16
2-3 塑性成形之FEM力學分析......................................17
2-4 模擬軟體Deform 3D之功能簡介..........................20
第三章 管件溫間液壓成形之模擬分析.............................26
3-1 前言..........................................................................26
3-2 T型三通管件之模擬................................................27
3-2-1 幾何模擬建立....................................................27
3-2-2 成形負載設定....................................................27
3-2-3 接觸面之摩擦係數設定....................................28
3-2-4 管件網格與分析................................................29
3-3 y型三通管件之模擬參數設定.................................31
第四章 模擬與實驗結果之討論.........................................43
4-1 溫間液壓成形試驗機...............................................43
4-1-1 軸向進給速度測試............................................43
4-1-2 內壓力增壓測試................................................44
4-2 T型管件模擬與實驗之比較......... ...........................44
4-2-1 150℃鎂合金T型三通管模擬與實驗結果之比
較.......................................................................44
4-2-2 250℃鎂合金T型三通管模擬與實驗結果之比
較.......................................................................46
4-3 y型管件模擬結果.....................................................51
第五章 結論........................................................................86
5-1 研究成果總結...........................................................86
5-2 未來展望...................................................................87
參考文獻..............................................................................89
附錄A y型模具設計圖........................................................95

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