部分浸没充液无限长圆柱壳声辐射特性研究  

Acoustic radiation characteristics of partially immersed and filled cylindrical shell

作　　者：王文涛[1] 王斌[1] 范军[1] 周富霖 WANG Wen-tao;WANG Bin;FAN Jun;ZHOU Fu-lin(Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《船舶力学》2024年第1期144-153,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(52001211)。

摘　　要：本文旨在研究圆柱壳的浸没和充液对其声辐射特征的影响,为界面附近充液壳体目标声学性能的评估和测量提供理论依据和研究方法。通过有限元数值仿真方法计算得到半充液无限长圆柱壳辐射声压的频率-浸没深度谱和半浸没无限长圆柱壳辐射声压的频率-充液高度谱,结果均呈现出两种明显的共振现象,分别由弯曲波和低阶流体附加波激发。根据相速度频散曲线推导出共振频率的预报公式,能够准确地预报辐射声场中出现的共振现象,可为系泊状态内部液舱结构振动声辐射线谱特征控制与评估提供理论支撑。This paper aims to study the influence of immersion and liquid filling on the acoustic radiation characteristics of cylindrical shells,and to provide theoretical basis and research methods for the evaluation and measurement of acoustic performance of liquid-filled shells near the interface.The frequency immersion depth spectrum of the radiated sound pressure of a semi-filled infinite cylindrical shell and the frequency liq-uid-filled height spectrum of a semi-immersed infinite cylindrical shell were calculated by using the finite el-ement numerical simulation method.The results show that there are two obvious resonance phenomena,which are respectively excited by the bending waves and the low-order fluid additional waves.According to the dispersion curve of phase velocity,the prediction formula of resonance frequency was deduced,which can accurately predict the resonance phenomenon in the radiated sound field and provide theoretical support for the control and evaluation of the characteristics of the vibration acoustic radiation line spectrum of the inter-nal tank structure in the mooring state.

关 键 词：圆柱壳 声辐射 充液 弹性波 流体附加波 

分 类 号：TB566[交通运输工程—水声工程]