潛艦壓力殼結構分析

The Analysis for the Pressure Hull of High Performance Submarine

許家豪(Chia-Hao Hsu)

指導教授 ： 李雅榮

國立臺灣大學/工學院/工程科學及海洋工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.01249

摘要

高性能潛艦之結構系統，應具有極佳之抵抗潛深水壓及水下爆震的能力，因此本文的研究為配合此目標之追求，將以潛艦壓力殼之耐高壓、耐爆震及耐衝撞的能力為研究重點。
首先，本文完成了德國U209型潛艦壓力殼(含未開孔模型與開孔模型)之數值模型與網格，並以此模型測試使用不同尺寸的內肋骨補強下，外殼所承受的應力與變形、挫曲強度的不同，藉此推測該設計條件下，最佳的結構設計。
其次，研究中則使用了先前建立之潛艦壓力殼之數值模型與網格，探討該壓力殼受爆震負荷下之振動反應及破壞行為。唯爆震現象所牽扯的現象複雜，爆震負荷的求取就是一項值得深究的課題，所以此部分研究除了利用文獻之經驗公式計算爆震負荷，分析壓力殼在此負荷下之破壞行為外，本文亦自行發展出理論解法，作為簡便而準確的外力設定模式。
此外，在衝撞強度方面，本文採用顯性時間積分進行潛艦整體結構之碰撞、壓潰等分析，對此壓力殼結構之動態衝擊特性有進一步了解。

關鍵字

壓力殼 ； 潛艦 ； 水下爆震 ； 碰撞

並列摘要

The structure system of high performance submarine must have the ability to resist the high pressure under deep water and under water shock loading. Consequently, the aim of this research will be the capability of resisting high pressure, shock loading, and collision damage of pressure hull
First, we accomplished the mathematical model and suitable finite elements of grid notes of the pressure hull, including the model without aperture and model with apertures and other added equipments. Then we use this model to gain the stress distribution, strain distribution and bulking strength in these conditions when the model with different inner ribs. Therefore, we can use those results to determination the optimization of structure design of this submarine.
Next, we use the numerical pressure hull model of U209 Submarine accomplished before to make a study of the dynamic response and failure behavior of pressure hull under shock loading. The phenomenon of under water shock, nevertheless, is so complex that we use the result of experience formulas in the past to be the design load. In the long run, we can get the distribution of deflection, stress of this model in dynamic. But in the final, we develop a theoretical method to replace the front one in order to reduce calculating time.
Besides, we comprehend the characteristic of this model further by probing into the collision behavior by using Explicit Time Integral Method.

並列關鍵字

Pressure Hull ； under water shock ； collisio ； Submarine

參考文獻

【11】李雅榮，羅光閔，”小型潛艦壓力殼耐壓強度之研究”，臺灣大學造船及海洋工程學研究所，2003。

【17】Lord Rayleigh，”On the Pressure Developed in a Liquid During the Collapse of a Spherical Cavity”，Philosophical Mag. (Ser. 6)Vol.34， P.94 ~ P.98，1917。

【18】H. Lamb，”The Early Stages of a Submarine Explosion”，Philosophical Mag. Vol.45，P.257 ~ P.265，1923。

【23】Christopher Earls Brennen，＂Cavitation and Bubble Dynamics＂，Ch. 2，Oxford University，1995。

【25】C. N. Wang and C. C. Tse，”The Scattering of an Acoustic Wave Incident on the Rigid Floating Body”，Applied Acoustics Vol.53，P.35~P.41，1998。