以有限元素法與反應曲面法分析兩點增量成形

NCUIR > Engineering College > Graduate Institute of Mechanical Engineering > Electronic Thesis & Dissertation > Item 987654321/84325

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/84325

Title:	以有限元素法與反應曲面法分析兩點增量成形
Authors:	劉家宏;Liu, Chia-Hung
Contributors:	機械工程學系
Keywords:	兩點增量成形;Box-Behnken
Date:	2020-07-28
Issue Date:	2020-09-02 19:04:43 (UTC+8)
Publisher:	國立中央大學
Abstract:	本文透過有限元素軟體ABAQUS模擬分析，探討壓料板力、沖頭直徑、沖頭轉速、每層下降量對成品最薄厚度、厚度均勻度之影響，並找出最適合之加工條件，達到提升最薄厚度、厚度均勻度的目的。本文以四種參數進行增量板金成形之模擬，並採用實驗設計法中適合建構二階反應曲面之Box-Behnken四因子三水準設計，共計25組模擬實驗點，並利用統計軟體Minitab依ABAQUS有限元素軟體分析之結果進行迴歸分析，以建立成品最薄厚度、厚度均勻度之預測模型，進而探討各因子對品質特性之影響，並找出最佳化條件。以有限元素模擬結果對本文所建構之預測模型進行檢驗，其結果顯示預測模型具有一定準確度。 ;An FEM model of incremental sheet metal formed hemisphere-cup is developed under the ABAQUS software. To observe the influence of punch geometric parameters, downward pressure, and step down size to the thinnest thickness, thickness uniformity of the finished. Also, intend to find the incremental forming condition for optimum design. The factors in the design include the tool nose diameter, spindle speed, downward pressure, and step down size. The experiment adopts 25 groups of analogs with the Box-Behnken design. Using the Minitab software to do the regression analysis and develop the prediction equations. By doing so, it’s excepted using the FEM model and surface response methodology to find the optimum design of the thinnest thickness, thickness uniformity. Through the results of FEM simulations to verify the prediction equations with considerable accuracy.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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