臺灣博碩士論文加值系統

積層製造技術越發成熟，許多知名鞋牌在近年也陸續推出3D列印鞋中底之鞋款，與以往使用乙烯/醋酸乙烯酯共聚物(Ethylene Vinyl Acetate，簡稱EVA)發泡材質不同，EVA發泡材料因內部細密氣孔使其擁有吸震與緩衝特性，因此在鞋中底結構設計上須以多孔性結構設計取代細密氣孔以達到相同特性。積層製造多孔性結構的優勢在於擁有與EVA相同特性的同時以不同的結構設計可以產生客製化與多樣化的鞋子外觀，符合市場在快速時尚流行下的需求，然而因積層製造製程較EVA發泡昂貴且結構設計上須先進行測試，需要配合CAE模擬分析以達到降低開發成本與資源浪費。
本研究係利用積層製造製作EVA模型試片，並將試片進行各項國際標準規範之機械性質測試內容包含壓縮實驗、衝擊實驗後，取出實驗結果材料參數套入有限元素分析中進行動態衝擊分析，再將分析結果與衝擊實驗結果進行比較驗證，另一方面使用Python撰寫程式達到自動匯入IGS檔、材料參數設定、定位、邊界條件設定與建立網格並進行分析後，將各模型分析結果所需之緩衝G值數據輸出為Excel檔。
最終本研究將多孔結構依據不同參數定義所得之衝擊模擬分析結果與衝擊試驗結果驗證比較，取出最為接近結果數據之參數定義，並建立一套分析流程，透過Python達到自動化，縮短結構參數最佳化開發時間提高工作效率。

As the mature of the additive manufacturing technology, many prestigious brands of shoes have launched the 3D printing midsoles in recent years. Different from the conventional Ethylene/Vinyl Acetate (EVA) foam material, EVA foam has shock-absorbing and cushioning properties due to its fine internal airholes. Therefore, the design of the shoe midsole structure has to be replaced by a porous structural design to achieve the same characteristics as fine airholes. The advantage of additive manufacturing porous structures is that they have the same characteristics as EVA but it can be designed with different structures to produce customized and diverse appearance shoes to meet the needs of the fast fashion market. However, the process of additive manufacturing is more expensive than EVA foam and the structural design has to be tested first. According to the reasons above, we adapt CAE simulation analysis to reduce the development costs and the waste of resources.
In this study, we used additive manufacturing to produce a sample model of EVA. The sample will be subjected to various international standard mechanical property tests including compression test and impact test. After the tests, the extraction of material parameters was applied in finite element analysis (FEA) for impact analysis, the results of the analysis were compared with the practical situation.
On the other hand, we write the program in Python to make FEA automatically input IGS file, material parameter, position and boundary condition. After the analysis, we exported the data required for the analysis results of each model to an Excel file.
Finally, this study compares the impact simulation analysis results obtained by defining different parameters of the porous structure with the impact test results. Select the parameter definition that is closest to the test result data and establish an optimized analysis process with Python to achieve automation, shorten the development time and improve the analysis efficiency.

摘要...i
Abstract...ii
誌謝...iii
目錄...iv
表目錄...vii
圖目錄...viii
第一章 緒論...1
1.1 研究背景與動機...1
1.2 研究目的...1
1.3 文獻回顧...2
1.3.1 多孔性晶格結構性質及應用...2
1.3.2 動態衝擊有限元素分析...3
1.3.3 Python應用於ABAQUS後處理開發...4
1.4研究流程...4
1.5論文架構...5
第二章 基礎理論...6
2.1積層製造...6
2.1.1熔融沉積成型技術製程...6
2.1.2 FDM製程成形缺陷...7
2.2 EVA的產生與介紹...7
2.3有限元素分析...7
2.3.1 ABAQUS-顯示動態分析...7
2.5機械性質測試標準...9
2.5.1壓縮試驗...9
2.5.2衝擊試驗...10
2.5.3拉伸試驗...11
第三章 試片製作與實驗方法...12
3.1多孔結構單元體尺寸定義及繪製...12
3.1.1多孔晶格尺寸定義...12
3.1.2多孔晶格結構繪製...12
3.2試片製作...13
3.2.1 Cura切片軟體...13
3.2.2製程問題與改善...14
3.3試片機械性質測試...15
3.3.1壓縮試驗...15
3.3.2衝擊試驗...17
3.3.3拉伸試驗...19
第四章 有限元素分析方法...21
4.1分析流程...21
4.2 EVA發泡材料參數設定...22
4.2.1超彈性材料參數...22
4.2.2發泡材參數選用與設定...24
4.3有限元素模型建立與設定...24
4.3.1 EVA發泡材試片建立...24
4.3.2多孔性晶格結構模型建立...25
4.3.3 EVA發泡材試片條件參數設定...26
4.3.4多孔晶格結構試片條件參數設定...26
4.4Python自動分析最佳化...27
4.4.1 Python模擬Isight...27
4.4.2 Python應用於Abaqus前處理...29
第五章 結果與討論...36
5.1結構試片製作結果...36
5.2發泡材料試片模擬分析結果與驗證...40
5.3多孔結構試片模擬分析結果與驗證...41
5.3.1固定管徑結構結構...41
5.3.2漸變管徑結構試片...45
5.4分析結果討論...46
第六章 結論與未來展望...47
6.1 結論...47
6.2未來展望...47
參考文獻 ...48
Extended Abstract...50

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