臺灣博碩士論文加值系統

目錄
摘要
致謝
目錄
圖目錄
表目錄
符號及單位表



第一章 緒論 1
1-1 前言 1
1-2 熱軋製程之介紹 2
1-2-1 粗軋製程介紹 3
1-2-2 鋼胚的縱向彎曲與楔形截面外形 4
1-2-3 精軋製程介紹 6
1-3 精軋鋼帶尾板撞擊 8
1-4 文獻回顧與歸納 9
1-5 研究目的與動機 12
第二章 塑性加工與有限元素法介紹 14
2-1 軋延塑性變形區域及其相關參數 14
2-1-1 鋼帶厚度裁減量及軋輥咬入鋼帶條件判斷 15
2-1-2 鋼帶與軋輥接觸弧長計算 16
2-1-3 軋延材料的速度分布及中性點計算 18
2-2 軋延力與軋延扭矩相關理論及其近似解 19
2-2-1 軋延力解析解-均勻變形理論 19
2-2-2 軋延解析解-考慮板厚方向剪應力的理論 27
2-3 有限元素基本理論與ABAQUS介紹 33
2-3-1 動態有限元素分析 34
2-3-2 顯式積分法 35
2-4 元素的選擇 38
2-5 接觸面性質 40
2-6 摩擦模型 43
2-6-1 法向接觸行為 43
2-6-2 切向接觸行為 44
第三章 研究方法 46
3-1 研究步驟 46
3-2 研究方法與研究流程圖 48
第四章 鋼帶尾板撞擊成因分析與複現 50
4-1 尾板撞擊特徵-軋延力差變化 50
4-2 熱軋線之鋼帶尾板撞擊案例 53
4-3 熱軋精軋有限元素模型 54
4-3-1 精軋機有限元素模型建立 54
4-3-2 楔形截面鋼帶模型 59
4-3-3 縱向彎曲鋼帶模型 63
4-3-4 材料流變曲線 64
4-3-5 鋼帶元素類型選用-模態分析 66
4-3-6 數值模型之元素網格收斂性分析 68
4-3-7 數值模型之精確度分析-軋機軋延力 70
4-3-8 軋延力與軋延扭矩之數值解的驗證 71
4-4 鋼帶尾板撞擊複現 75
4-4-1 楔形截面鋼帶尾板動態與軋輥受力模擬 75
4-4-2 縱向彎曲鋼帶尾板動態與軋輥受力模擬 76
4-4-3 熱軋線上導板對鋼帶尾板撞擊的影響 82
4-5 鋼帶尾板撞擊成因與動態複現結果歸納 85
第五章 精軋操作降低鋼帶尾板撞擊策略 86
5-1 軋輥水平度介紹 88
5-2 軋輥水平度對鋼帶動態影響研究流程 89
5-3 具軋輥水平度之精軋有限元素模型 91
5-4 軋輥水平度對鋼帶軋延影響之分析 93
5-4-1 軋輥水平度對鋼帶中心線偏移的影響 93
5-4-2 各項軋延參數對鋼帶中心線偏移修正量分析 103
5-4-3 鋼帶側偏與軋輥水平度關係迴歸模型 112
5-4-4 鋼帶側偏矯正程式 113
5-5 軋輥水平度對鋼帶側偏研究結果歸納 115
第六章 精軋組裝間隙對尾板撞擊的影響 117
6-1 精軋組裝間隙 117
6-1-1 軋機水平方向組裝間隙 118
6-1-2 軋機輥輪軸向組裝間隙 120
6-2 組裝間隙對尾板撞擊影響之研究方法與流程 122
6-2-1 精軋組裝間隙的有限元素模型 124
6-2-2 具組裝間隙精軋機之鋼帶尾板撞擊案例模擬 128
6-2-3 精軋水平間隙對鋼帶尾板運動影響 131
6-2-4 輥輪軸向間隙對鋼帶尾板運動影響 138
6-3 組裝間隙對尾板撞擊影響之結果歸納 142
第七章 結論 143
7-1 鋼帶尾板撞擊成因分析與複現 143
7-2 軋輥水平度對鋼帶側偏研究 144
7-3 組裝間隙對尾板撞擊影響 145
參考文獻 146

參考文獻
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