研究生: |
林穎佑 Ying-Yu Lin |
---|---|
論文名稱: |
積層製造結合發射器機殼晶格輕量化設計與分析之研究 Design and Analysis Lightweight Transmitter Shell by Incorporating Lattice Structures for Additive Manufacturing |
指導教授: | 鄭正元 |
口試委員: |
許啟彬
Chi-Pin Hsu 陳俊名 Chun-Ming Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2021 |
畢業學年度: | 110 |
語文別: | 中文 |
論文頁數: | 95 |
中文關鍵詞: | 積層製造 、3D列印 、晶格 、輕量化 、發射器 |
外文關鍵詞: | Additive Manufacturing, 3D Printing, Lattice, lightweight, Transmitter |
相關次數: | 點閱:378 下載:9 |
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中文摘要
近年來,積層製造(Additive Manufacturing,AM)技術已廣泛地運用在國防與航太產業中,積層製造有別於傳統製造方式為加法加工,傳統製造方式屬減法加工很難完成的複雜晶格與曲面結構,積層製造技術是從數位模型資訊中,透過堆疊層積的方法,完成製作任何特殊幾何與形貌,讓工程師與操作者皆可達成產品晶格輕量化的目的。在自然界中,蜂窩組織結構具有良好的高強度,且組織重量又輕,在過去航天器設計研發時,內部大量採用蜂窩結構,例如:美國B-2隱形轟炸機的機體零件,多數採用蜂窩夾層結構,即在兩片薄板間膠合蜂窩結構使機體強度增高,整 體零件重量亦可達到輕量化。本研究利用Solidworks先建立3D模型檔案,再將三角形蜂窩結構與六角形蜂窩結構導入產品,後續搭配Ansys軟體做有限元素分析,確認輕量化後的產品能否維持原有的結構強度,最後再執行產品減重後的分析比較。 本次實驗的分析結論是,貫穿的晶格結構導入在發射器機殼內,造成機殼的應力分析數據過大,進而使機殼的安全係數降低;未貫穿的晶格結構導入在發射器機殼內,晶格的生長方向不論是法向或是軸向,發射器機殼的降伏強度與原型發射器機殼差異極小,並且能夠有效地減輕發射器機殼的重量。
Abstract
In recent years, Additive Manufacturing (AM) technology has been widely used in the defense and aerospace industries. Additive manufacturing is different from traditional manufacturing methods for additive processing. The traditional manufacturing method is a complex lattice and curved surface structure that is difficult to complete by subtractive processing. Additive manufacturing technology is based on digital model information through the method of stacking to complete the production of any special geometry and topography so that engineers and operators can achieve the goal of lightweight product lattice. In nature, the honeycomb structure has good high strength and lightweight. In the past during the design and development of spacecraft. A large number of honeycomb structures were used inside. For example, the body parts of the American B-2 stealth bomber mostly adopted honeycomb sandwich structure. That is the honeycomb structure is glued between the two thin plates to increase the strength of the machine body and the weight of the whole parts can also be reduced. This research uses Solidworks to create a 3D model file first then introduce the triangular honeycomb structure and hexagonal honeycomb structure into the product. Followed by finite element analysis with Ansys software to confirm whether the lightweight product can maintain the original structural strength. Finally perform the analysis and comparison after the product weight loss.
The analysis conclusion of this experiment is that the permeable lattice structure is import transmitter shell, resulting the shell’s stress analysis data to be large, which in turn reduces the safety factor of the transmitter shell. The non-penetrating lattice structure is introduced import the transmitter shell, whether the direction of the growth is the normal direction or the axis direction, the yield strength of the transmitter shell is very little from that of the prototype transmitter shell, and can effectively reduce the weight of the transmitter shell.
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