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題 名 | Research on Hydroforming Tubular Parts with Dissymmetrical Structure=非對稱結構管件內高壓成形研究 |
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作 者 | 林俊峰; 李峰; 苑世劍; 韓傑纔; | 書刊名 | 中國機械工程學刊 |
卷 期 | 31:4 2010.08[民99.08] |
頁 次 | 頁335-339 |
分類號 | 472.26 |
關鍵詞 | 液壓成形; 內高壓成形; 非對稱結構管件; Hydroforming; Internal high pressure forming; Dissymmetrical structure; |
語 文 | 英文(English) |
中文摘要 | 本文應用動態顯式有限元法和實驗方法對非對稱結構的管件內高壓成形過程進行了成形研究,研究了加載路徑對內高壓成形過程和成形缺陷的影響,分析了材料在成形過程中的流動規律,指出了在加載曲線中存在著最佳成形區間,當成形壓力小於65MPa時,成形中產生起皺,成形壓力大於75MPa時,成形中管件發生開裂,只有當成形壓力介於65MPa與75MPa之間,使軸向進給量可以正好補償徑向的變形量纔能獲得壁厚較為均勻的零件,最終獲得了最大膨脹率為73%,最小減薄率為10%的非對稱結構的空心管件。 |
英文摘要 | A double handles part with dissymmetrical structure used for airplanes was manufactured by hydroforming with the advantage of more even thickness than conventional mechanical method. It is difficulty to form the part with dissymmetrical structure because its biggest section expansion ratio is much higher than the uniform elongation of the tube blank. Three different loading paths were utilized in simulating the forming process of hydroforming the dissymmetrical part and the results of different loading paths were presented. Folding back occurs as the internal pressure <65MPa and bursting occurs as the internal pressure >75MPa. The most serious thinning occurs in the top of handle. The maximum thickness appears in the area of the opposite to handle. Only as the internal pressure is 70MPa around, A successful part with big expansion ratio up to 73% can be manufactured in the experiment. |
本系統中英文摘要資訊取自各篇刊載內容。