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研究生:林則佑
研究生(外文):LIN, TSE-YU
論文名稱:FRP聲納護罩承受拍擊之接合強度研究
論文名稱(外文):A Study on Joint Strength of FRP Sonar Dome subjected to Slamming Impact
指導教授:羅光閔
指導教授(外文):LUO, GUANG-MIN
口試委員:徐慶瑜周欣賢羅光閔
口試委員(外文):HSU, CHING-YUCHOU, HSIN-HSIENLUO, GUANG-MIN
口試日期:2020-07-16
學位類別:碩士
校院名稱:國立高雄科技大學
系所名稱:造船及海洋工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:85
中文關鍵詞:異質接合船底拍擊流固耦合
外文關鍵詞:heterojunction jointBottom SlammingFluid-Solid Interaction
相關次數:
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  • 下載下載:52
  • 收藏至我的研究室書目清單書目收藏:0
聲納護罩對於軍事船舶是不可或缺的設備,近年來大幅使用FRP進行製作,因其擁有良好的透波率且重量輕。為了將FRP與金屬完美結合,本研究參考各式接頭樣式,發現不同材料需使用膠栓進行組合,故製作異質接合試片,透過實驗與模擬的結合,發現兩者趨勢相同。然而各個船級協會規定設計結構時須承受住拍擊負荷,故本研究希望透過異質接合的方式,探討船底承受拍擊時FRP聲納護罩之接合強度。
本研究將膠栓接頭設計概念套用至水下載具模型,測試接頭承受拍擊負荷的強度,有兩種方式模擬拍擊負荷,首先使用DNV法規計算等效船底拍擊壓力,並給定在法規所規定區域上;第二種為流固耦合方式,將模型給定初速度使模形撞擊水域,並擷取兩種模擬方法於船殼上應力進行比較,比較結果顯示兩者的應力誤差不到3%,因此可證明流固耦合方式可以等效法規所計算結果,同時將聲納罩螺栓數量增加一倍,由模擬結果發現螺栓應力並沒有明顯下降趨勢,而速度提高螺栓應力開始有所差別。
Sonar Dome is an necessary equipment for military vessel. In recent years, FRP has been used for production. Because of its good wave-transparent rate and light weight.In order to perfectly combine FRP with metal. This study refers to different joint styles. Found that different materials need to be combined with adhesive-bolt. So make heterojunction joint specimen. Through the combination of experiment and simulation. Found that the two trends are the same.
However, the various classification society stipulate that they must support the slamming load when designing the structure. Therefore, this research hopes to use heterojunction joint. Discuss the joint strength of FRP sonar Dome when the bottom of the ship is subjected to slamming.
In this study, the design concept of the adhesive-bolt joint was applied to the underwater vehicle model. Test the strength of the joint support slamming load. There are two method to simulate slamming load. First use the DNV rules to calculate the equivalent bottom slamming pressure , and it is given in the area by the code. The second is Fluid-Solid Interaction. The initial velocity of the model will make the model Impact the water. And extract the two simulation methods to compare the stress in the hull. Comparison results show that the stress error of the two is less than 3%. Therefore, it can be proved that the Fluid-Solid Interaction method can calculate the results of equivalent regulations. At the same time add to double the number of sonar dome bolts. It is found from the simulation results that the bolt stress has no obvious downward trend. The bolt stresses start to differ when the speed increases.
誌謝 I
摘要 II
ABSTRACT III
目錄 IV
圖目錄 VI
表目錄 X
符號表 XI
第1章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 2
1.3 研究方法與論文架構 4
第2章 接頭強度試驗 8
2.1 接頭樣式設計 8
2.2 試片規劃 10
2.2.1 試片尺寸 12
2.2.2 試片製作 13
2.3 測試條件 19
2.4 實驗結果 20
第3章 數值模擬 24
3.1 數值模擬方法 24
3.2 數值模型尺寸及材料參數 28
3.2.1 數值模型 28
3.2.2 FRP材料參數 31
3.2.3 金屬材料參數 32
3.2.4 結構膠材料參數 32
3.3 模擬試片之邊界條件 33
3.4 模擬及實驗結果比較 36
第4章 聲納罩接合應用 39
4.1 拍擊模擬方法 39
4.2 水下載具模型尺寸介紹 42
4.3 水下載具模型之邊界條件 48
4.4 模型命名法 52
4.5 模擬結果討論 53
4.5.1 簡易模型驗證 53
4.5.2 DNV模型船殼應力比較 54
4.5.3 CEL模型整體應力分佈 58
4.5.4 DNV及CEL模型聲納罩接頭結果 60
第5章 結論及未來展望 69
5.1 結論 69
5.2 未來展望 69
參考文獻 71
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