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系統識別號 U0026-0812200914333660
論文名稱(中文) 平面震波通過橈性與剛性斜面之研究
論文名稱(英文) The Investigation of Planar Shock Across a Flexible and a Rigid Inclined Surfaces
校院名稱 成功大學
系所名稱(中) 航空太空工程學系專班
系所名稱(英) Department of Aeronautics & Astronautics (on the job class)
學年度 96
學期 2
出版年 97
研究生(中文) 何志傑
研究生(英文) Chih-Chieh Ho
學號 P4791105
學位類別 碩士
語文別 中文
論文頁數 86頁
口試委員 口試委員-鄭泗滄
口試委員-許掙強
指導教授-尤芳忞
中文關鍵字 應變  震波  銅片  應力 
英文關鍵字 Dytran  Shock Wave  Shell Copper  Strain  Stress 
學科別分類
中文摘要 本研究主要是應用商用有限元素分析軟體MSC.Software公司產品Patran及Dytran兩套軟體,來進行平面震波衝擊金屬板的結構與氣動分析,模擬出震波衝擊橈性與剛性金屬斜板的應變狀況。本分析建構與實驗相同大小的銅片做為測試模型,銅板的厚度採用0.2 及0.03 二種,先運用Hypermesh程式建構模型,再運用Patran及Dytran程式進行參數設定及分析。因為分析對象包含了平面震波與35度傾角及50度傾角的銅板等兩項不同元素,所以進行建模時,透過Hypermesh建構網格;分析時利用Lagrange和Eulerian兩種不同建模的耦合技巧,以達到平面震波與銅板交互作用的正確模擬。運用震波管實驗,配合應變規量測銅片受到入射震波衝擊後的應變值,與Dytran程式模擬的應變值做二者特性的比較,以瞭解數值模擬運用的成果及準確範圍。本研究中成功的發展出Hypermesh程式創建模型、Nastran轉換模型、Patran輸入及匯入模型、Dytran程式模擬震波衝擊金屬片的分析方法及有效模擬,除可減少實驗的風險及成本,也可提早預測金屬片受震波衝擊的應變狀況。
英文摘要 In this research, we took advantage of two sophisticated commercial finite element analysis software, which are Patran and Dytran and being developed by MSC Software Company to analysis the planar shock across a flexible and a rigid inclined surfaces and to study the variation of strain on the surface by numerical modeling. The simulation model is built of shell coppers and brasses with the thickness of 0.2 and 0.03 with distinctive consideration of different coupling techniques, which are named as the Lagrangian and the Eulerian techniques to two different elements, for better illustrating the interaction of shock in the simulation. The shock wave tube experiment of the same model arrangement and the results are fullfilled by measuring the strain of the shell copper from a strain gauge planted in it,which is impacted by the incident shock wave. Meanwhile, the data is correlate with the results generated by the Dytran modeling to ensusre the accuracy of the numerical simulation. It is a successful analytical approach which is conducted effectively by manipulating the softwares of Hypermesh、Nastran、Patran and Dytran programs to simulate the phenomenon of plane shock wave impulse on a metal sheet. It is not only the cost and risk of experiments are reduced, but also the strain status can be foreseen.
論文目次 簽名頁
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全文中文摘要
全文英文摘要
目錄
表目錄……………………………………………………………………Ⅰ
圖目錄……………………………………………………………………Ⅱ
符號說明…………………………………………………………………Ⅶ
第一章 緒論
1.1 研究動機及目的……………………….…………………………1
1.2 文獻回顧……………………………….…………………………1
第二章 理論分析
2.1 分析方法介紹…………………………….………………………4
2.1.1 顯式時間積分法……………………..………………………5
2.1.2 Eulerian分析方法…………………….………………………6
2.1.3 Lagrangian建模和Eulerian建模耦合…………….…………8
2.2 震波管基本原理………………………………….………………8
2.3 Dytran程式之震波管模擬…………..……………………………10
2.4 高、低壓震波模擬產生…………………..………………………..12
第三章 參數設定、實驗設備、方法及步驟
3.1 分析模型建立……………………………………………………15
3.1.1建立網格……………………………………………………15
3.1.2 材料與屬性…………………………………………………15
3.1.3 方形Eulerian區域震波模擬………………….……………16
3.2 實驗設備…………………………………………………………18
3.2.1 震波管………………………………………………………19
3.2.2 測試段及測試模型…………………………………………20
3.2.3 暫態資料紀錄………………………………………………20
3.3 實驗方法…………………………………………………………21
3.3.1 實驗問題的分析架構………………………………………21
3.3.2 實驗方法……………………………………………………21
3.4 實驗步驟…………………………………………………………22
第四章 數值模型分析與討論
4.1 數值模型建構……………………………………………………24
4.2 銅板應變量測方法………………………………………………25
4.3 數值模擬與實驗量測……………………………………………26
4.3.1數值模擬與實驗量測比較……………………..……………26
4.3.2 數值模擬與實驗量測分析…………………………………28
第五章 結論與建議
5.1 結論………………………………………………………………30
5.2 建議………………………………………………………………31
參考文獻…………………………………………………………………32
圖…………………………………………………………………………34
自述………………………………………………………………86
參考文獻 [1]Glass,I.I., “Shock Waves on Earth and in Space”, Progress in Aerospace Sciences, Vol.17, No.4, pp.269-286, 1977
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[7]許琨東, “雙斜面體上震波的反射及其干涉現象之研究”, 成大航太所碩士論文, 1995
[8]林偉仁, “平面震波於楔形體與垂直鰭片模型所產生反射-繞射現象之研究”, 成大航太所碩士論文, 2004
[9]吳忠慶, “平面震波通過橈性與剛性斜面之研究”, 成大航太所碩士論文, 2007
[10]鄧宇昇, “超音速震波衝擊金屬平板之動態響應分析”, 成大航太所碩士論文, 2007
[11] Owezarck, J.A., Fundamentals of Gas Dynamics, International Textbook Company, pp.395-398, 1964
[12] Gaydon, A.G., and Hurle, I.R., The Shock Tube in High Temperature Chemical Physics , Reinhold Publishing Corp., New York, pp.1-63, 1963
[13]Glass, I.I., and Patterson, G.N., “A Theoretical and ExperimentalStudy of Shock-Tube Flow”, Journal of Aeronautical Sciences, Vol.22, No. 2, pp.73-100, 1955
[14]Han, Z.Y. and Yin, X.Z., Shock Dynamics, Kluwer Academic Publishers, pp.42-67, 1993
[15]Tanguay, Michel, and Colonius, Tim, “Numerical Simulation of Bubbly Cavitating Flow in Shock Wave Lithotripsy”, Division of Engineering and Applied Science California Institute of Technology, 2001
[16]“MSC Dytran User’s Guide”, MSC.Software Corporation, 2004
[17]陳文照、曾春風與游信和譯, William D. Callister, JR原著, 工程材料-材料科學基礎篇, 高立圖書有限公司, pp.115-160, 2006
[18]沈廣漢, “應用MEMS微感測器於多層穿靶訊號之偵測”, 成大航太所碩士論文, 2005
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