设备质量对潜艇铺板输入导纳的影响

Effect of Equipment Mass on Input Admittance of Submarine Deck

设备质量及其相对位置关系对潜艇铺板输入导纳存在一定的影响,对该问题进行研究有助于提高潜艇抑振降噪水平,增强其隐身性能。首先推导了激励点处和激励点外集中质量对薄板输入导纳影响的理论计算公式,使用ANSYS对相关公式进行了验证,然后使用得到的理论公式分别对激励点处和激励点外设备质量对潜艇铺板输入导纳的影响规律进行了分析。结果表明:增加激励点处设备质量能明显降低输入导纳,调整激励点外设备位置在一定程度上降低输入导纳。

The equipment mass and its relative position have a certain influence on the input admittance of the submarine deck. Research on the problem helps to reduce submarine' s vibration and noise level,and enhance its stealth performance. Firstly the theoretical formulae describing concentrated mass on or outside the excitation point's influence on thin plate' s input admittance are derived. Secondly,the relevant formulae are validated using ANSYS. In the end,the rules about equipment mass on or outside the excitation point' s influence on submarine deck's input admittance are discussed using the theoretical formulae obtained. The results showed: increasing equipment mass on the excitation point significantly reduces input admittance; adjusting device location outside excitation point can reduce the input admittance to some extent.