臺灣博碩士論文加值系統

FRP複合材料現仍不斷的被開發及研究，因FRP複合材料不具磁性具良好透波性，可有效達匿蹤以減少被攻擊機會。軍艦承受水下爆炸衝擊屬於激烈之高應變率響應，目前水下爆炸之結構響應模擬大多以靜態材料參數進行模擬。本論文透過MTS材料試驗機與霍普金森桿取得拉伸方向靜態材料參數及動態材料參數，並以BV認證開發之ComposeIT獲得其餘方向材料參數，其結果顯示LT800/M225複合材料高應變率之動態材料參數下，其應力及應變皆較靜態試驗提升，應力應變曲線在趨勢上也有明顯的差異，取得LT800/M225靜態及動態材料參數，利用ABAQUS進行簡化艦船模型之水下爆炸模擬，並以Tsai-Hill破壞準則判斷材料損壞，研究結果顯示採用靜態或動態材料參數其兩者破壞時間相近，但利用動態材料參數模擬其應變響應較靜態材料參數分析結果明顯，本論文研究成果可提供複合材料結構設計者後續研究參考使用。

FRP composite materials are constantly being developed and researched. FRP composite materials are nonmagnetic and have good wave transmittance, which can effectively reduce the chance of being attacked. The impact of underwater explosion is an intense high strain rate response on warships. At present, most of the structural response simulations of underwater explosions are simulated with static material parameters. In this paper, the static material parameters and dynamic material parameters in the tensile direction are obtained through the MTS material testing machine and Hopkinson bar, and the material parameters in the remaining directions are obtained with the ComposeIT developed by BV certification. The results show that the LT800/M225 composite material has high strain rate dynamic Under the material parameters, the stress and strain are higher than the static test, and the stress-strain curve is also significantly different in trend. The static and dynamic material parameters of LT800/M225 are obtained, and ABAQUS is used to simulate the underwater explosion of the simplified ship model. Tsai-Hill failure criterion to judge material damage. The research results show that static or dynamic material parameters have similar failure times, but the strain response simulated by dynamic material parameters is more obvious than the results of static material parameter analysis. The research results of this paper can provide composite material structures. The designer's follow-up research reference use.

誌謝 I
摘要 II
目錄 V
圖目錄 VII
表目錄 XI
符號說明 2
一、緒論 1
1.1.研究動機 1
1.2.文獻回顧 2
1.3.論文架構 7
二、研究方法 9
2.1.FRP複合材料力學 9
2.1.1.FRP力學特性 9
2.1.2.積層板理論 11
2.1.3.Tsai-Hill破壞準則 13
2.2.霍普金森桿試驗 14
2.3.水下爆炸 19
三、積層與材料試驗 24
3.1.FRP積層 24
3.1.1. 真空耗材 24
3.1.2. 真空設備及灌注條件 26
3.1.3. 樹脂與添加劑比例 27
3.1.4. 灌注與後硬化 28
3.2. 拉伸試驗 30
3.2.1. 測試機台 30
3.2.2. 試片規範與測試條件 31
3.2.3. 靜態拉伸試驗結果 33
3.3. 霍普金森桿拉伸試驗 37
3.3.1. 機台介紹及試驗方法 37
3.3.2. 夾持方式評估 40
3.3.3. 試驗條件 44
3.3.4. 動態試驗結果 45
四、數值模擬 59
4.1.數值模擬驗證-水下爆炸研究 59
4.2.艦船模型介紹與積層設定 66
4.3.邊界設定 69
4.4.模型網格 72
4.5.水下爆炸模擬結果 75
五、結論與未來展望 81
5.1.結論 81
5.2.未來展望 82
參考文獻 84

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