水下航行器推进器-轴系-壳体系统声振特性研究

摘要

本文针对尺度相对较小的水下航行器,建立了推进器-轴系-壳体系统动力学模型.运用三维声弹性理论和三维水弹性声学分析软件,计算了典型激励力作用下系统的振动特性,得到了推进器-轴系-壳体系统在螺旋桨和轴上纵向和横向非定常单位激励力作用下的声辐射规律.%To study the underwater vehicle with relatively small scale, the dynamic model of propeller-shaft-hullsys-tems was established. For the propeller-shaft-hull system, the three-dimensional sono-elastisticity theory and the acoustic analysis software were applied to compute the vibration characteristics of the system under typical exciting forces onpro-peller and shaft, the acoustic radiation traits of different exciting forces in both transverse and longitudinal directions were obtained.