多段式拖曳系统随机振动传递隔振模拟

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (21) : 259-264.

论文

多段式拖曳系统随机振动传递隔振模拟

王志博

作者信息 +

Simulation for random vibration transfer and isolation of a multi-segment towed system

WANG Zhibo

Author information +

文章历史 +

摘要

为了研究多段式拖曳系统的隔振与频谱传递特征，建立了用于模拟随机振动的多段式拖曳集中参数法，在数值验证的基础上，利用波谱产生了母船拖曳端的随机振动，计算比较了多段式拖曳系统的运动响应频谱特征，结果显示增加缆段中拖曳体的附加质量系数可起到降低频谱能量起到更好的隔振效应，在传统二段式基础上继续增加缆段和拖曳体的数量同样可起到更好的隔振效应，降低高频振动传递，但仍存在长周期的运动传递效应。

Abstract

A lumped parameter model for simulating random vibration of a multi-segment towed cable system was established.On the basis of numerical verification, wave spectrum was used to generate random vibration at mother ship’s towing end, and frequency spectral features for motion response of the multi-segment towed system were simulated contrastively under multiple working conditions.The results showed that increase in added mass coefficient of towed bodies in cable segments can reduce spectral energy and gain better vibration isolation effect; increase in cable segments and towed bodies on the traditional two-segment system can also gain better vibration isolation effect and reduce higher frequency vibration transfer, but there is a long-period motion transmission effect.

导出引用

王志博. 多段式拖曳系统随机振动传递隔振模拟[J]. 振动与冲击, 2019, 38(21): 259-264

WANG Zhibo . Simulation for random vibration transfer and isolation of a multi-segment towed system[J]. Journal of Vibration and Shock, 2019, 38(21): 259-264

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