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研究生:古嘉華
研究生(外文):Chia-Hua Ku
論文名稱:船艏結構壓潰行為之實驗探討
論文名稱(外文):Experimental Study on Crushing Behavior of Ship's Bow Structure
指導教授:李雅榮李雅榮引用關係
指導教授(外文):Ya-Jung Lee
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:造船及海洋工程學研究所
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:2002
畢業學年度:90
語文別:中文
中文關鍵詞:船艏結構碰撞壓潰行為平均抗壓力
外文關鍵詞:ship's bow structurecollisioncrushing behavioraverage crushing force
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本文主要在探討高速船之船艏結構,在航行時與其他結構物如海洋平台或礁石撞擊時安全性的評估。
透過壓縮試驗,求出船艏結構基本元件(圓管、方管、T型、L型斷面柱)之壓縮力與壓縮距離的關係曲線,並進一步對一系列的縮小船艏模型進行靜態壓縮試驗,了解不同材料與不同加強肋配置的船艏模型,在整個壓潰過程及抗壓強度的差異,並提供為理論分析之比較驗證。
在理論分析方面,利用weirzbicki對鋼製圓管平均壓潰力的預估式,對鋁合金圓管壓縮試驗的結果加以分析;鋁合金方管則使用N. Jone提出的預估式。在船艏結構整體的抗壓能力預估方面,將船艏模型壓潰結果與Amdahl、Yang & Caldwell、Shengming Zhang提出的預估式相比較,Amdahl與Yang & Caldwell是將複雜結構分割成L型、十字型、T型元件的組成,透過能量的疊加轉換成平均壓潰力的預估式;Shengming Zhang則是利用壓潰後損毀的體積,乘上厚度、尺寸的系數組成、對吸收能量的預估式。最後利用簡算法預估船艏耐撞性並進一步修正其適用性。

This thesis investigated the collision behaviors and evaluated the average crushing forces between the bow of the high-speed ships and other structures such as offshore structures during the voyage.
The static axial crushing tests of various cross-sectional structural elements including circular tubes, square tubes, T-shape and L-shape beams were first conducted. According to the experimental results, we can calculate the forces-indentation relations for these elements. Furthermore, the same crushing tests were performed on a series of bow models in order to study the influences of different materials and different allocations of stiffeners. The results not only helped to understand the crushing behaviors, but also provided data to further verify theoretical analyses.
In the theoretical analysis, Weirzbicki’s mean crushing force prediction formula was used for Aluminum alloy circular tubes, while N. Jone’s prediction formula was used for square ones. About the prediction of the crushing behaviors for bow structures, two types of formulas were considered.Amdahl’s formula and Yang and Caldwell’s formula divided the complex structures into L-shape, X-shape, and T-shape elements, and calculated the mean crushing forces by adding the absorbed energy. In comparison, Zhang’s formula was the function of the destroyed material volume, average thickness, and average width.Finally,using the simple calculation method and this method was further discussed in this thesis.

第一章 序論
1.1前言
1.2 文獻回顧
1.3 論文架構
第二章 船艏結構之抗壓試驗
2.1基本元件之軸向壓潰試驗
2.2方形薄管之壓潰機制分析
2.3圓形薄管之軸向壓縮機制
2.4船艏結構軸向壓潰試驗
第三章 船艏結構之抗壓理論
3.1 緒
3.2圓管之壓潰機制分析
3.3方管之壓潰機制分析
3.4船艏結構之碰撞理論分析
3.5簡算法對船艏結構平均壓潰力之預估
第四章 結論與展望
4.1 綜合結論
4.2 未來研究之展望

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