利用積層製造技術及物質點法探討IPU材料特性

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Title:	利用積層製造技術及物質點法探討IPU材料特性
Authors:	夏昕薇;Xia, Xin-Wei
Contributors:	土木工程學系
Keywords:	積層製造;物質點法;熔融沉積成型;3D 列印
Date:	2024-07-30
Issue Date:	2024-10-09 14:49:22 (UTC+8)
Publisher:	國立中央大學
Abstract:	隨著現代科技的發展，材料的使用種類及產品設計需求明顯增多且複雜。以材料的發展而言，學者專家致力於追求重量更輕、強度更高與成本更低等特性之材料。而產品的設計，更是越趨複雜以因應越來越多的外在條件下之作用。然而，複雜的設計於過往經常造成工業製造上的極大挑戰，與極大的成本支出。為了能有效克服此困境，積層製造技術便應運而生，而此技術也在近二十年間在各工程領域（如汽車、航太和生醫等）都有蓬勃發展，甚至被稱為第三次工業革命。 INGROWS PU 簡稱為IPU 為近年來由可成生技公司新研發之線材，其系與積層製造常用線材TPU (熱塑性聚氨酯)有相似特性，亦同屬熱成型塑膠類材料；然而，因此線材於一般文獻中不易找到精確的材料參數，且無法確認在不同列印方式，甚至是環境因素下是否會對材料特性及參數造成影響。故此本研究主要欲結合積層製造與IPU 線材，探討IPU 線材成型之力學特性。主要探討方式將由實際試驗與數值模擬同時著手，探討材料成型後之受力行為與其相對應之彈性與塑性特性。實際試驗系利用計有泛能試驗機進行抗拉與抗壓試驗；數值分析則使用物質點法。此外，本論文亦將深入分析各材料參數，如楊氏模數與塑性階段時之切線模數。綜上所述，此一系列之IPU 線材成型後之力學試驗與數值分析成果均可作為後續產品設計與開發時之重要參考依據。;With the advancement of modern technology, the variety of materials used and the demands of product design have significantly increased and become more complex. In terms of material development, scholars and experts are dedicated to pursuing materials that are lighter, stronger, and more cost-effective. Product design has also become increasingly intricate to meet the growing number of external conditions and requirements. However, complex designs have historically posed significant challenges and incurred substantial costs in industrial manufacturing. To effectively overcome these difficulties, additive manufacturing technology emerged. Over the past two decades, this technology has flourished in various engineering fields, such as automotive, aerospace, and biomedical industries, and has even been referred to as the Third Industrial Revolution. INGROWS PU, abbreviated as IPU, is a newly developed filament by Acme Biotechnology. It shares similar properties with TPU (thermoplastic polyurethane), a material commonly used in additive manufacturing, and belongs to the category of thermoplastic materials. However, precise material parameters for this filament are difficult to find in common literature, and it is unclear whether different printing methods or even environmental factors might affect its IV properties and parameters. Therefore, this study aims to combine additive manufacturing with IPU filament to investigate the mechanical properties of IPU filament formation. The main approach will involve both experimental testing and numerical simulation to examine the material′s behavior under stress and its corresponding elastic and plastic characteristics. The experimental tests will be conducted using a universal testing machine for tensile and compressive tests, while the numerical analysis will employ the Material Point Method. Additionally, this thesis will delve into various material parameters, such as the Young′s modulus and the tangent modulus during the plastic stage. In summary, the results of the mechanical tests and numerical analyses of the IPU filament series can serve as important reference data for future product design and development.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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