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題 名 | 以相當波系法預測小水面雙體船之結構動力負荷=Prediction of Strucutral Dynamic Load of a Swath Ship by Equivalent Wave Approach |
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作 者 | 李銘霖; 方銘川; 鄭君恩; | 書刊名 | 中國造船暨輪機工程學刊 |
卷 期 | 16:1 1997.02[民86.02] |
頁 次 | 頁9-24 |
分類號 | 444.1 |
關鍵詞 | 極值分析; 相當波系; 流體動壓力分佈; Extreme value analysis; Equivalent wave system; Hydrodynamic pressure distribution; |
語 文 | 中文(Chinese) |
中文摘要 | 為提供小水面雙體船,以有限元素法進行船體結構動力反應分析所需的設計負荷,本文提出一個分析方法,以預估作用在船殼表面的流體動壓力。本方法係利用統計學上的極值分析原理,求得在任一設定海況時,作用在該船橫甲板中央處波浪荷重的極值。由此極值再求出某一與之對應的相當波系,最後將此相當波系視為入射波,以求得作用在船殼上的流體動壓力。文中以SWATH-6A為實例進行數值計算,求得其在7級海況時之波浪荷重極值、相當波系以及船殼表面流體動壓力分佈,以供該船船體結構動力反應分析之應用。 |
英文摘要 | To offer the adequate design loads for the structural dynamic analysis by using finite element models, a computational procedure for predicting the hydrodynamic pressure distribution of the SWATH ship was developed and is presented here. Based on the extreme value statistics, the maximum wave loads at the cross deck of a SWATH ship can be calculated for a designated sea state. A corresponding equivalent wave system can then be obtained and the hydrodynamic pressure on the surface of the ship hulls can be estimated with the action of the equivalent wave system. To demonstrate the computational procedure, a case study of the SWATH-6A ship in sea state 7 was carried out. The calculated results can be used as the structural load to analyze the dynamic structural responses. |
本系統中英文摘要資訊取自各篇刊載內容。