臺灣博碩士論文加值系統

基於海洋探索以及國防軍事的需求，水下載具由於其特性，被大量應用於相關領域，綜觀國內外現有水下載具的材質，金屬與FRP(fibre-reinforced plastic)複合材料均有人使用，本研究考量後續的外殼保養以及整體的結構重量，選擇FRP複合材料做為水下載具的結構材料，並使用有限元素分析的方式確認結構強度。
由於目前無法尋得FRP水下載具的結構規範，因此本研究將依照BSI PD-5500對肋骨尺寸的規範，並以6061-T6鋁合金作為金屬壓力殼的材料，首先計算出肋骨的尺寸，接著以該結構的等效慣性矩為基礎，換算出鋁合金厚板、FRP單板結構與三明治結構的壓力殼尺寸，並以ABAQUS進行數值分析，評估FRP微型水下載具的耐壓強度，以及承受非接觸水下爆炸衝擊的動態響應。分析結果顯示，採用鋁合金厚板與FRP單板結構的表現相似。然而在承受水下爆炸衝擊上，若壓力殼是採用FRP而非鋁合金，應力響應衰退的速度會變快許多。

Based on the needs of marine exploration and national defense, underwater vehicles are widely used in related fields due to their characteristics. Looking at the materials of existing underwater vehicles at home and abroad, both metal and FRP composite materials are used. For the overall structural weight, FRP composite material was selected as the structural material of the underwater vehicle, and the structural strength will confirm by finite element analysis.
Since the structural specification of the FRP underwater vehicle cannot be found at present, this study will follow the BSI PD-5500 specification for the size of the rib, and use 6061-T6 aluminum alloy as the material of the pressure hull, first calculate the size of the rib, and then Based on the equivalent moment of inertia of the structure, the pressure hull dimensions of the aluminum alloy thick plate, FRP laminate plate and sandwich structure were converted, and numerical simulation was carried out with ABAQUS to evaluate the compressive strength of the FRP micro underwater vehicle, and dynamic response of the non-contact underwater explosions. The analysis results show that the use of aluminum alloy thick plate behaves similarly to the FRP laminate. However, in the case of underwater explosion shock, if the pressure shell is made of FRP instead of aluminum alloy, the rate of stress response decay will be much faster.

摘要 I
ABSTRACT II
致謝 III
目錄 IV
圖目錄 VII
表目錄 X
符號表 XI
第一章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 2
1.3 論文架構 6
第二章 研究方法 8
2.1 PD-5500規範介紹 8
2.1.1 肋骨尺寸設計 9
2.2 非線性挫曲強度分析 10
2.3 水下爆炸理論及爆震因子 12
2.4 古典積層板理論 15
第三章 模型介紹 17
3.1 微型水下載具尺寸及分段 17
3.2 微型水下載具之材料參數 18
3.3 命名法則 20
3.4 補強結構尺寸 21
3.4.1 AL-FR系列 22
3.4.2 AL-NoFR系列 25
3.4.3 FRP-LAM系列 26
3.4.4 FRP-SAND系列 27
第四章 微型水下載具結構強度分析 29
4.1 模型與邊界條件 29
4.2 AL-FR系列 30
4.2.1 AL-FR靜壓分析結果 30
4.2.2 AL- FR非線性挫曲分析結果 31
4.3 AL-NOFR系列 33
4.3.1 AL-NoFR靜壓分析結果 33
4.3.2 AL-NoFR非線性挫曲分析結果 33
4.4 FRP-LAM系列 35
4.4.1 FRP-LAM靜壓分析結果 35
4.4.2 FRP-LAM非線性挫曲分析結果 36
4.5 FRP-SAND系列 39
4.5.1 FRP-SAND靜壓分析結果 39
4.5.2 FRP-SAND非線性挫曲分析結果 39
4.6 小結 41
第五章 微型水下載具之水下爆炸分析 44
5.1 模型與邊界條件 44
5.2 全船應力隨時間變化 48
5.3 AL-FR系列 51
5.4 AL-NOFR系列 52
5.5 FRP-LAM系列 53
5.6 FRP-SAND系列 54
5.7 小結 55
第六章 結論與未來展望 56
6.1 研究結論 56
6.2 未來展望 57
參考文獻 58

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