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研究生: 賴柏仲
Po-Chung Lai
論文名稱: MARC應用於A1050P鋁材之非對稱壓延分析與驗證
指導教授: 葉維磬
Wei-Ching Yeh
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 機械工程學系
Department of Mechanical Engineering
畢業學年度: 96
語文別: 中文
論文頁數: 92
中文關鍵詞: 非對稱壓延曲率有限元素臨界縮減率
外文關鍵詞: critical reduction, asymmetric rolling, curvature, finite element
相關次數: 點閱:6下載:0
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  • 由於非對稱壓延具有可有效降低壓延力、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針對乾摩擦下非對稱壓延進行模擬分析,以不同厚度的板材在不同非對稱壓延條件下,探討上下輥輪的圓周切線速度比值對壓延後板材的曲率、壓延力及壓延扭矩的影響。


    Because asymmetric rolling can decrease the rolling force and the arrangement of material that makes the rolling arrangement become more free and variable, it brings great benefits on Engineer. In this paper, asymmetric rolling is simulated by using the finite element software MARC. Discussing curvature of specimens, rolling force and rolling torque with peripheral speed ratio of up roll and low roll by different specimen thickness.

    中文摘要 I 英文摘要 II 目錄 IV 圖表說明 VI 第一章 緒論 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 2-1 彈塑性有限元素基本觀念 2-1-1 有限元素求解程序 11 2-1-2 彈塑性材料特性矩陣 13 2-2 Update Lagrangian Formulation(ULF)理論 16 2-3 MARC接觸問題的處理 17 2-3-1 接觸之定義 18 2-3-2 接觸面摩擦效應之處理 20 第三章 MARC有限元素軟體介紹與應用 3-1 MARC程式編輯 22 3-2 MARC分析求解技術定義 3-2-1 參考座標系統 24 3-2-2 非線性代數方程組疊代求解方法 25 3-3 基本假設 26 3-4 MARC應用於壓延成形問題之設定與操作程序 3-4-1 前處理 26 3-4-2 分析 28 3-4-3 後處理 29 3-5 收斂檢查 29 第四章 結果與討論 4-1 實驗驗證 33 4-1-1 異徑同周速壓延 33 4-2 同徑異周速壓延 35 4-2-1 壓延力與壓延扭矩之比較 38 4-2-2 試片厚度對於同徑異周速壓延試片彎曲曲率的影響 38 4-2-3 周速比對壓延試片曲率之效應 39 第五章 結論與建議 5-1 結論 42 5-2 建議 42 參考文獻 44 附錄 74

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