数字海洋与水下攻防2024，Vol.7Issue(3)：260-267,8.DOI:10.19838/j.issn.2096-5753.2024.03.003
柔性支撑推进系统-艇体耦合系统声振特性研究
Research on Vibro-acoustic Characteristics of Flexible Supporting Propeller-hull Coupling System
摘要
Abstract
In this paper,the effect of flexible supporting propulsion system on the vibration noise of propeller-shaft-hull coupling system is studied.A numerical model of the flexible supporting propeller-hull coupling system is established.The vibration and radiated noise of the hull under the longitudinal,horizontal and vertical excitation of the propeller are calculated using finite element/boundary element method,and are compared with the traditional support system.The results show that the large radiation noise of the hull is mainly caused by the coupling mode of shafting and raft frame,and it is beneficial to reduce the radiation noise of the hull by improving the mass and stiffness of raft frame.Compared with the traditional support,the flexible support can significantly reduce the radiated noise of the hull,which is reduced by 14.65 dB under the longitudinal excitation,4.48 dB under the horizontal excitation,and 8.36 dB under the vertical excitation.The use of flexible supporting propulsion system can reduce the hull radiated noise and provide support for vibration and noise control of propeller-shaft-hull coupling system.关键词
桨-轴-艇耦合系统/柔性支撑/辐射噪声Key words
propeller-shaft-hull coupling system/flexible supporting/radiated noise分类
交通工程引用本文复制引用
李乐坤,秦云龙,蒋林心,张冠军..柔性支撑推进系统-艇体耦合系统声振特性研究[J].数字海洋与水下攻防,2024,7(3):260-267,8.基金项目
船舶振动噪声重点实验室基金"串联多球壳组合结构耦合声振特性研究"(6142204210208) （6142204210208）
国家自然科学基金"海洋声学基础研究-噪声与振动控制"专项项目(52241102) （52241102）
国家自然科学基金"面向声目标的水下椭圆柱壳激励声场分布特性研究"(51909201). （51909201）
