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首页> 外文期刊>International Journal of Naval Architecture and Ocean Engineering >Acoustical characteristic predictions of a multi-layer system of a submerged vehicle hull mounted sonar simplified to an infinite planar model
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Acoustical characteristic predictions of a multi-layer system of a submerged vehicle hull mounted sonar simplified to an infinite planar model

机译：简化为无限平面模型的浸没式声纳的多层系统的声学特性预测

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ABSTRACT Hull Mounted Sonar (HMS) is a long range submerged vehicle's hull-mounted passive sonar system which detects low-frequency noise caused by machineries of enemy ships or submerged vehicles. The HMS needs a sound absorption /insulation multi-layer structure to shut out the self-noise from own machineries and to amplify signals from outside. Therefore, acoustic analysis of the multi-layer system should be performed when the HMS is designed. This paper simplified the HMS multi-layer system to be an infinite planar multi-layer model. Also, main excitations that influence the HMS were classified into mechanical, plane wave and turbulent flow excitation, and the investigations for each excitation were performed for various models. Stiffened multi-layer analysis for mechanical excitation and general multi-layer analysis for turbulent flow excitation were developed. The infinite planar multi-layer analysis was expected to be more useful for preliminary design stage of HMS system than the infinite cylindrical model because of short analysis time and easiness of parameter study.
机译：摘要船体声纳（HMS）是一种远程潜水器的船体无源声纳系统，可检测敌舰或潜水器的机械设备引起的低频噪声。 HMS需要一种吸音/隔热多层结构，以隔离自身设备的自噪声并放大来自外部的信号。因此，在设计HMS时应对多层系统进行声学分析。本文将HMS多层系统简化为无限平面多层模型。此外，影响HMS的主要激励分为机械激励，平面波激励和湍流激励，并且针对各种模型对每种激励进行了研究。开发了用于机械激励的加劲多层分析和用于湍流激励的通用多层分析。预期无限平面多层分析比无限圆柱模型在HMS系统的初步设计阶段更有用，因为其分析时间短且参数研究容易。

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