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題名 | 類海象級潛艇壓力殼強度之探討=A Strength Analysis for Walrus-Like Submarine Pressure Hull |
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作者姓名(中文) | 梁卓中; 徐慶瑜; | 書刊名 | 中國造船暨輪機工程學刊 |
卷期 | 18:4 1999.11[民88.11] |
頁次 | 頁55-72 |
分類號 | 444.1 |
關鍵詞 | 潛艇壓力殼; 最大操作水深; 殘餘強度; Submarine pressure hull; Maximum diving depth; Residual strength; |
語文 | 中文(Chinese) |
中文摘要 | 海象級潛艇(Walrus class submarine)為荷蘭海軍現役新式潛艇,性能優異,其船型 採淚滴形船身設計,而壓力殼由圓筒殼、圓錐殼及半球形殼三種類型結構組合而成。本文係 以一類海象級潛艇壓力殼(Walrus-like submarine pressure hull)(模型一)及其輕量化壓力殼後之 模型(模型二)為對象,應用有限元素法研究壓力殼強度,其間並控討最大操作水深、安全因 子以及殘餘強度,分析時採用軸對稱定雙曲率薄殼元素(axisymmetric constant meridian curvature Element)模擬壓力殼結構,進行1000ft、2000ft及3000ft三種不同水深下之強度探 討後發現:類海象級潛艇壓力殼(模型一)之全船最大應力值,發生在圓錐殼第6段與圓筒殼 第7段接合處之內子午向應力,若考慮安全因子為2.0時,產生降伏的最大操作水深約為488.9 呎,此時其壓力殼殘餘抗爆震強度能力約破壞強度之50%,而其輕量化後壓力殼(模型二)之 全船最大應力值,則發生在半球型殼第1段與圓錐殼第2段接合處之內子午向應力,若考慮 安全因子為2.0時,產生降伏的最大操作水深為367.0呎,以相同操作水深比較雖然模型二 亦滿足結構設計之要求且重量較輕,但模型二之強度較模型一強度約低24.9%;另發現進行 壓力殼設計時,安全因子之訂定會直接影響其抵抗靜水壓負荷之外其它爆震負荷之能力,當 安全因子愈大(愈保守),則可抵抗爆震負荷之殘餘強度愈高。上述研究結果,已作成系列圖 表,可供潛艦結構設計者參考使用。 |
英文摘要 | The Walrus class submarine is the new type and good performance deployed submarine of the Netherlands navy up to now. The shape of its hulls is the“tear-drop shape”design and consists of a dome shell, cylindrical shell and conical shell structure. This work used the finite element method to examine the strength Walrus-like class submarine pressure hull-for it's the maximum diving depth, safety factor and the residual strength under 1000ft, 2000ft and 3000ft three different operating depth. In the procedure of the analysis the Walrus-like class submarine prototype pressure hull as the Model 1 and its minimum weight design model as the Model 2, the axisymmetric constant meridian curvature element is used to simulate the pressure hull of these idealized models. According to those results, the maximum stress of the Model 1 is meridian stress and occurred at the join inner surface of section 6 and section 7. If the safety factor is 2 the maximum yielding diving depth is 488.9ft and the residual strength to resist the shock load remain 50%. The same as Model 2, the maximum stress occurred at the join inner surface of section 1 and section 2. The maximum yielding diving depth is 366.9ft and the residual strength also remains 50%. The comparison of Model 1 and Model 2 in same diving depth, the strength of the Model 2 is lower 24.9% than the Model 1. The study also found the choice of the safety factor in the pressure hull design stage is significant. In other words the larger of the safety factor, the higher of the residual strength to resist the shock load. The result has listed in series figures providing a valuable reference for the designer of submarine pressure hull. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。