Mathematical Modelling and Analysis of Submarine Propeller Shaft

Obeid Muhammad Usmani, Syed Irtiza Ali Shah
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Abstract

In this research modeling, design and analysis of a submarine propeller shaft will be performed using theories of vibrations, the computer software will be used for this purpose mathematical simulations will also be done to verify the results obtained from the software. Vibration Analysis of a three Bladed Propeller Shaft for a Carrier has been discussed in the literature, but not much work has been done till now on the vibrational response of a submarine propeller shaft. The dynamic excitation of the propeller shaft is usually transmitted to the rest of the submarine. Some submarines are subjected to intense levels of vibrations throughout their service additionally silent submarines have become a potent invention, which produces less noise at high speeds however higher vibration results in more noise-reducing the stealth characteristics of the submarines, in this research the propeller shaft will be modeled in such a way that the system vibrations are minimum hence increasing the life of the submarine, reducing the noise and increasing the stealth characteristics of the submarine, this analyses will be done by using theories of vibrations used finite element methods for modelling and analysis. The expected results from the analysis contain the least vibrations, produced by the propeller shaft of the submarine reducing the overall noise. Furthermore, their result help in the development of a system that besides increases the maneuverability of the submarine. We are able to successfully determine the vibration present in the system, and the approach on how to reduce them.
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潜艇螺旋桨轴的数学建模与分析
在本研究中,将使用振动理论对潜艇螺旋桨轴进行建模、设计和分析,计算机软件将用于此目的,数学模拟也将用于验证从软件中获得的结果。文献中已经讨论了舰载机三叶片螺旋桨轴的振动分析,但迄今为止对潜艇螺旋桨轴的振动响应研究还不多。螺旋桨轴的动力激励通常传递给潜艇的其余部分。一些潜艇在服役期间受到强烈的振动水平,此外,静音潜艇已经成为一项强有力的发明,在高速下产生更少的噪音,然而更高的振动导致更多的噪音减少潜艇的隐身特性,在本研究中,传动轴将以这样一种方式建模,即系统振动最小,因此增加了潜艇的寿命。为了降低噪音和增加潜艇的隐身特性,这项分析将通过使用有限元方法进行建模和分析的振动理论来完成。分析的预期结果包含了最小的振动,由潜艇的螺旋桨轴产生,降低了整体噪音。此外,他们的结果有助于开发一种系统,除了增加潜艇的机动性之外。我们能够成功地确定系统中存在的振动,以及如何减少它们的方法。
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