摘要
本文采用统计能量分析对一双层圆柱壳体在水下的流固耦合振动和声辐射进行分析计算。首先对各系统的模态参数采用理论方法计算,与实验结果对比表明,误差较大。为此,本文提出用灰色理论预测各子系统模态参数,通过计算结果与实验结果进行对比,表明提出的方法可行,可以显著降低计算误差,为水下结构振动和声辐射计算提供了一个新思路。
SEA （Statistical Energy Analysis） is applied to analyze and calculate the liquid-solid coupled vibration and sound radiation of a submerged double cylindrical shell.At first,the mode parameters of each sub-system are acquired through theoretical compute.Comparing with the experiment,it is found out that the consult in this method has high error margin.Finally, gray forecast is used to get the mode parameters, and the result is compared with experimental.That prove the method in this paper is practical,and it also offers a new method for vibration and sound radiation of submerged structure.
出处
《船舶力学》
EI
北大核心
2006年第2期146-152,共7页
Journal of Ship Mechanics
关键词
统计能量分析
水下双层壳体
振动
声辐射
SEA
submerged double cylindrical shell
vibration
sound radiation
