臺灣博碩士論文加值系統

近年來，異質接合介面在工業中的應用越發廣泛，在高壓、高溫及抗衝擊情況下均具有很高的使用價值。也因為如此，各種異質金屬銲接材料的機械性質研究更顯重要。
考量國艦國造為現行重要國家政策，故本論文針對現用於水下載具之兩種主要材料Inconel 625、HSLA 80及Inconel 625與HSLA 80銲接後之材料性質實施探討，並據以執行爆震分析比對結果差異，以期幫助我們進一步了解接合界面的性質，從而檢討如何提高異質接合介面的性能及適用性，為工業生產帶來更大的發展空間。
在實驗上，我們選擇使用MTS材料試驗機及霍普金森拉伸桿，進行拉伸性能測試，進一步了解材料在不同形變條件下的響應。同時亦使用Abaqus軟體進行爆震分析，模擬異質接合介面在受到衝擊或壓力時的行為表現，從而更加深入地了解介面的性質。
本次研究靜態實驗結果：Inconel 625楊氏係數為207.5 GPa、降伏應力404.7 MPa、極限應力817.7 MPa、伸長率64.3 %、HSLA 80楊氏係數為229.3 GPa、降伏應力617 MPa、極限應力659.7 MPa、伸長率22.6 %；Inconel+HSLA銲接試片楊氏係數為194.6 GPa、降伏應力459.7 MPa、極限應力638.3 MPa、伸長率22.6 %。
本次研究動態實驗結果(以擬靜態為基準)：Inconel 625楊氏係數降低71%~84%、極限應力增加約25%、伸長率大幅降低；HSLA 80楊氏係數降低66%~86%，極限應力增加約20%、伸長率大幅增加；Inconel+HSLA銲接試片楊氏係數降低69%~82%、極限應力增加約50%、伸長率大幅增加。
軟體分析部分：將上述數據代入計算爆震響應，可確認三種材料於遭受衝擊時最大變形量均以4350應變率時為最高，代表楊氏係數與最大變形量成反比，故後續如需實施艦船設計模擬時，建議可以最小楊氏係數之材料參數代入計算，可獲得相對嚴謹之設計參數。

In recent years, the application of heterogeneous joints has become increasingly widespread in the industry, exhibiting high value in high-pressure, high-temperature, and impact-resistant scenarios. Consequently, the study of mechanical properties in various heterogeneous metal welding materials has become even more crucial.
In consideration of the current important national policy of indigenous shipbuilding, this thesis focuses on the investigation of the material properties of two main materials used in underwater vehicles, namely Inconel 625 and HSLA 80, as well as their properties after being welded together. The study includes conducting blast analysis and comparing the results to understand the characteristics of the joint interface and explore ways to enhance the performance and applicability of dissimilar metal joints. This research aims to provide insights that could contribute to the further development of industrial production in the field.
In the experiment, we utilized the MTS materials testing machine and Hopkinson bar to conduct tensile performance tests, aiming to further understand the material response under different deformation conditions. Additionally, we employed Abaqus software for blast analysis, simulating the behavior of the dissimilar metal joint interface when subjected to impact or pressure.
　　The static experimental results of this study are as follows: For Inconel 625, the Young's modulus is 207.5 GPa, yield strength is 404.7 MPa, ultimate tensile strength is 817.7 MPa, and elongation is 64.3%. As for HSLA 80, the Young's modulus is 229.3 GPa, yield strength is 617 MPa, ultimate tensile strength is 659.7 MPa, and elongation is 22.6%. Regarding the welded material, the Young's modulus is 194.6 GPa, yield strength is 459.7 MPa, ultimate tensile strength is 638.3 MPa, and elongation is 22.6%.
　　The dynamic experimental results of this study showed that the Young's modulus of Inconel 625 decreased by 71% to 84%, the ultimate strength increased by approximately 25%, and the elongation significantly reduced. For HSLA 80, the Young's modulus decreased by 66% to 86%, the ultimate strength increased by approximately 20%, and the elongation significantly increased. As for the Inconel+HSLA welded specimens, the Young's modulus decreased by 69% to 82%, the ultimate strength increased by approximately 50%, and the elongation significantly increased.
　　Software analysis part: By incorporating the aforementioned data into the shock response calculations, it was confirmed that the three materials exhibited the maximum deformation at a strain rate of 4350. This indicates an inverse relationship between the Young's modulus and maximum deformation, suggesting that for subsequent ship design simulations, it is recommended to use material parameters with the minimum Young's modulus to obtain more accurate design parameters.

摘　　要 iv
ABSTRACT vi
致　　謝 viii
目　　錄 ix
圖 目 錄 xiii
表 目 錄 xx
符號說明 xxiii
第一章 緒論 1
1.1 研究目的 1
1.2 文獻回顧 2
1.2.1 霍普金森桿 2
1.2.2 水下爆震[27] 4
1.2.3 異質金屬銲接 7
1.3 論文架構 9
第二章 實驗與研究方法 11
2.1 實驗說明 11
2.2 材料性質介紹 12
2.2.1 鎳基超合金(Inconel 625) 12
2.2.2 高強度低合金鋼(HSLA 80) 13
2.3 實驗原理介紹 15
2.3.1 霍普金森桿 15
2.3.2 材料試驗機 20
2.4 應變率差異說明 24
2.5 一維波傳理論[8] 28
2.6 水下爆震 31
2.6.1 水下爆震現象[65] 31
2.6.2 爆震因子[66] 31
2.6.3 爆震負荷 32
2.7 數值模擬分析 34
2.7.1 流固耦合方法(Fluid-Solid Interaction,FSI) 34
2.7.2 力學模式[69] 35
第三章 材料實驗 39
3.1 實驗緣由 39
3.2 實驗說明 40
3.3 實驗設備 41
3.3.1 霍普金森桿 41
3.3.2 材料試驗機 42
3.4 銲接說明 43
3.5 切銲結果 46
3.6 材料試驗機拉伸試驗 49
3.6.1 材料試驗機試片製作 49
3.6.2 擬靜態試驗流程 50
3.7 霍普金森桿拉伸試驗 51
3.7.1 霍普金森桿試片製作 51
3.7.2 動態試驗流程 53
3.8 材料試驗機拉伸試驗結果 54
3.8.1 Inconel 625試片(數字編號1至3) 54
3.8.2 HSLA 80試片(數字編號4至6) 59
3.8.3 Inconel+HSLA銲接試片(數字編號7至9) 64
3.8.4 靜態實驗結果比較 69
3.9 動態試驗結果 71
3.9.1 3600應變率(數字編號3600-1至3600-12) 71
3.9.2 4350應變率(數字編號4350-1至4350-12) 78
3.9.3 5100應變率(數字編號5100-1至5100-12) 85
3.9.4 動態實驗結果比較 92
3.10 靜動態實驗結果比對 94
第四章 異質接合圓筒殼承受爆震分析 98
4.1 實例驗證分析 99
4.1.1 分析模型 101
4.1.2 材料參數 102
4.1.3 負荷及邊界條件 103
4.1.4 網格選用 105
4.1.5 驗證分析與討論 106
4.2 模型設定 107
4.2.1 模型尺寸 107
4.2.2 材料參數 110
4.2.3 負荷及邊界條件 112
4.2.4 網格選用 114
4.3 分析結果 115
4.3.1 4X10-4s-1應變率分析比較 115
4.3.2 3600s-1應變率分析比較 121
4.3.3 4350s-1應變率分析比較 127
4.3.4 5100s-1應變率分析比較 133
4.4 結果比對與討論 139
第五章 結論 143
5.1 結論 143
5.2 未來展望 144
參考文獻 146

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