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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/147

    Title: 鋁合金擠壓扣接製程參數之有限元素分析;FInite Element Analysis of Aluminum Alloy Clinch Joint Manufacturing Parameters
    Authors: 吳揚九;WU, YANG-CHIU
    Contributors: 機械工程系研究所
    Keywords: 擠壓扣接;數位影像相關法;鋁合金;有限元素分析;clinch joint;digital image correlation;aluminum alloy;finite element method
    Date: 2018
    Issue Date: 2019-05-23 12:52:43 (UTC+8)
    Publisher: 機械工程系研究所
    Abstract: 本研究是以有限元素分析法對鋁合金5052-H32與鋁合金6061-O扣件製程進行分析與模擬。研究內容分為兩個部分,第一部分工作是建立鋁合金5052-H32扣件製程之有限元素模型,匯入鋁合金5052-H32材料性質至上、下試片,以非線性彈簧簡化壓制環,縮短運算時間、改善超彈性體壓制環造成網格破碎與進行壓制環驗證。配合扣件金相圖,利用此模型找出影響扣件形狀、形鎖尺寸(interlock)與扣件頸部寬度(neck)的接觸設定,改變沖頭、試片與底模之間的摩擦係數,以確認各接觸面之摩擦係數之效應分析,找出合適的摩擦係數與接觸設定。建立壓制環簡化模型的有限元素模型,進行模擬與實體扣件試片的比對。第二部分工作是以壓制環簡化模型的有限元素模型為基礎,將上、下試片置換為鋁合金6061-O,透過數位影像相關法(Digital Image Correlation)量測鋁合金之材料性質並匯入有限元素模型,進行模擬與實體扣件試片的比對。最後在歸納出兩種鋁合金在不同的下壓力、沖頭直徑與底模深度對微結構之效應。
    This study is focused on finite element method for aluminum alloy 5052-H32 and 6061-O clinch joint process. The first part is to establish FEM model of the aluminum clinch joint process , importing the material properties of the aluminum 5052-H32 to specimens , simplifying the PU hyper-elastic compression ring with a nonlinear spring model and improving the of hyper-elastic pressing ring mesh distortion problem. According to the metallograghic picture of specimens , we can figure out the influences of clinch joint specimen’s shape , interlock and neck , in interaction property , friction coefficient is the main parameter , we change the parameter of punch , specimens and die’s contact surface friction coefficient to ensure the parameter. The second part is based on the FEM model of the simplified compression ring model , we replaced the materal properties to aluminum alloy 6061-O , the properties are measured by DIC(Digital Image Correlation) and import to the FEM model , and compared with the metallograghic. According to the result of FEM and metallograghic , finally we summarized the effect of the different pressures , punch diameter and die depth.
    Appears in Collections:[機械工程學系] 學位論文

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