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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 洪振發 | |
dc.contributor.author | CHE-KAI HSU | en |
dc.contributor.author | 許哲愷 | zh_TW |
dc.date.accessioned | 2021-06-08T04:59:02Z | - |
dc.date.copyright | 2010-08-20 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-18 | |
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Solid and Structures, 41, PP.4927-4938. 12.Gran, J.K.; Frew, D.J., 1997, In-target radial stress measurement from penetration experiments into concrete by ogive-nose steel projectiles, Int. J. Impact Eng. 19(8), pp. 715-726. 13.Gruau.C,Picart,D.Belmas.R,Bouton.E,Delmaire-Sizes.F,Sabatier.J,Trumel.H,2009,Ignition of a confined high explosive under low velocity impact, Int. J. Solid and Structures, 36, PP.537-550. 14.Johnson, G.R.;Cook, W.H., 1985,Fracture characteristics of three metals subjected to various strains,strain rates,temperature and pressure, Eng. Fracture. Mechanics,21,pp.31-48. 15.LS-DYNA,2006,Keyword User’s Manual,Version 971,Livemore Software Technology Corporation. 16.Matuska, D.A., 1983, A model for high velocity penetration, Orlando Technology, Inc (1983). 17.Matuska, D.A., 1984, HULL final user's manual, Air Force Armament Laboratory, Eglin (Florida) (1984) Rept. 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Impact Eng. 31, pp. 825-841. 28.Zhang F.G.; Li, E.Z., 2002, A computational model for concrete subjected to large strains, high strain rates, and high pressure, Explosion Shock Wave, 22(3), pp.198-202. 29.朱松檢、熊靜華、涂詩美、宋俊德,2005,Application of wavelet packet to data analysis of projectile penetrating target experiment, 訊息與電子工程,vol. 3, no. 2, pp.105-109. 30.朱松檢、蘇佛,2003,Real time measurement of complicated medium for high speed penetrating, 訊息與電子工程,vol. 1, no. 4, pp.304307. 31.馬愛娥、黃鳳雷、初哲、李金柱,2008,Numerical simulation on yawed penetration into concrete,爆炸與衝擊,Vol. 28, No.1, pp.33-37. 32.梁卓中、吳炳文,防護結構抗貫穿能力之研究方法,2003,中華民國力學學會會訊,第102 期專題報導,第1-13 頁。 33.趙海霞、張少明, 2008,Application of numerical simulation technology to the development of earth penetrating weapons,中北大學學報(自然科學版),vol. 29, No,1, pp.25-28. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/23310 | - |
dc.description.abstract | 隨著軍事裝備的提高以及高科技武器的發展,對於高速彈體之碰撞及貫穿方面之研究不斷面臨新的挑戰。自從二次大戰以來,高速彈體撞擊及穿透靶體為國際間對於軍事研究的一門重要課題,從研究角度而言探討高速彈體撞擊靶體過程,彈體及靶體的動態反應問題及破壞問題均為頗具挑戰性的問題。
彈體碰撞靶體以及貫穿靶體的過程牽涉到彈體與靶體的大變形、幾何非線性、塑性變形和損傷破裂等材料非線性問題及接觸邊界之相互作用等問題。本文應用有限元素分析軟體模擬彈體衝擊貫穿靶體之過程,分析模型中選擇適當的材料模型進行數值模擬,分析彈體撞擊多層且具間隔之鋼板靶體及混凝土靶體,探討其動態反應分析之結果,檢討彈體減速度曲線、靶體應力變化歷程、靶體破壞等歷程變化。 | zh_TW |
dc.description.abstract | With the improvement of military equipment and the development of high-tech weapons, on the study the impact and penetration of high-speed projectile continues to face new challenges. Since World War II, it is an important issue that the projectile impacting and penetrating on the specially designed targets for the military research, and researchers have focused on that the dynamic response problem after the impact of the targets.
The process of the projectile impact against the targets comprises large deformation, plastic deformation of projectile and targets, and damage of materials, especially non-linear fracture problems and the contact problems. This thesis, investigated the dynamic responses and energy absorption during the projectile perforation of multi-separated target by numerical method. Analysis of impact multi-separated of the steels and concrete targets, the results of dynamic response, including deceleration of projectile, stress variation of target, the weight loss of projectile, and the damage of the target were summarized. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T04:59:02Z (GMT). No. of bitstreams: 1 ntu-99-R96525010-1.pdf: 3368435 bytes, checksum: d91ab675c4cc1cc9a487d99bbc0c0cd4 (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 誌謝 I
摘要 III ABSTRACT IV 目錄 V 圖目錄 VII 表目錄 IX 符號表 X 第一章 導論 1 1.1研究動機與目的 1 1.2文獻回顧 2 1.3本文內容 6 第二章 LS_DYNA之有限元素計算理論 7 2.1 材料結構受衝擊損傷基本理論 7 2.1.1 高速衝擊現象與影響 11 2.1.2 高速衝擊對介質之作用 12 2.2 LS-DYNA程式的基礎計算方法 13 2.3 時間積分法之選取 16 2.3.1直接積分法 17 2.3.2中央差分法 19 2.3.3不同積分法之優劣性 23 2.4 時間步長之控制 24 2.5 接觸演算法 26 2.5.1 接觸中之初始穿透設定 30 2.6 沙漏效應(HOURGLASS EFFECT) 31 2.7 破壞準則之探討 32 第三章 彈體撞擊多層有間隔鋼板靶體之數值模擬及動態反應分析 37 3.1 LS-DYNA之材料模型理論 37 3.1.1 材料模型理論之介紹 37 3.1.2 接觸面破壞模式之設定 41 3.1.3 定義邊界條件 41 3.2彈體幾何模型及有限元素模型 42 3.3靶體幾何模型及有限元素模型 46 3.4彈體撞擊多層且有間隔鋼板靶體之數值模擬結果 47 第四章 彈體撞擊多層有間隔混凝土靶體之數值模擬及動態反應分析 73 4.1 LS-DYNA之材料模型理論 74 4.1.1 混凝土之破壞損傷本構模型之介紹 74 4.1.2 接觸定義及邊界條件設定 77 4.2 彈體與靶體之幾何模型及有限元素模型 78 4.3彈體撞擊多層且有間隔混凝土靶體之數值模擬結果 81 第五章 結論與展望 101 5.1 結果與討論 101 5.2 未來展望 102 參考文獻 103 | |
dc.language.iso | zh-TW | |
dc.title | 彈體撞擊多層間隔靶體之動態分析 | zh_TW |
dc.title | Dynamic Analysis of Projectile and Multi-Layered Targets | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 孔慶華,王偉輝,梁卓中,邱進東 | |
dc.subject.keyword | 高速彈體,多層靶體,有限元素分析,貫穿,衝擊,破壞, | zh_TW |
dc.subject.keyword | High Speed Projectile,Multi-Layered Targets,Finite Element Analysis,Perforation,Impact,Damage, | en |
dc.relation.page | 105 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2010-08-19 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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