中国舰船研究2024，Vol.19Issue(3)：292-301,10.DOI:10.19693/j.issn.1673-3185.03269
舰船舷间双层声桥声振传递特性研究
Study on vibro-acoustic transmission characteristics of ship's double-layer acoustic bridge
刘子豪 1周富霖 1李兵 1彭子龙 2范军1
作者信息
- 1. 上海交通大学 海洋智能装备与系统教育部重点实验室,上海 200240
- 2. 江苏科技大学 能源与动力学院,江苏 镇江 212100
- 折叠
摘要
Abstract
[Objectives]The inter-ship structure between double-layer shells is an important bridge for the transmission of acoustic vibration from pressure shell to light shell.To reduce the impact on the acoustic vibra-tion radiation level of ships,a double-layer acoustic bridge inter-ship structure is proposed and its acoustic vibration transmission characteristics studied.[Methods]The finite element method is used to establish a finite-length double-layer cylindrical shell acoustic vibration radiation model of an inter-board double-layer acoustic bridge.The differences between the sound and vibration transmission of the double-layer acoustic bridge and those of a traditional single-layer acoustic bridge structure are compared and analyzed.Finally,the influence of the double-layer acoustic bridge's structure,structural parameters and axial distribution spacing on its acoustic radiation and vibration transmission characteristics is revealed.[Results]The results show that the double-layer acoustic bridge connection structure between double cylindrical shells has a better noise reduction effect than the traditional single-layer acoustic bridge structure.The effect of the"2-1"double-layer acoustic bridge structure model on reducing vibration transmission between double cylindrical shells is better than that of"1-2"and"2-2"double-layer acoustic bridge structures.Three different"1-1"double-layer acoustic bridge con-nection structures show similar vibration transmission reduction effects.The spacing of the bottom acoustic bridge ribs and the width of the transverse plate have a great influence on the vibration transmission reduction effect of the double-layer shell structure,while the height of the acoustic bridge has little effect.The closer the axial distribution of double-layer acoustic bridges between double cylindrical shells,the worse the vibration transmission reduction effect.[Conclusions]The results of this study can provide references for the shock absorption and noise reduction design of the inter-board structures of ships.关键词
双层圆柱壳/声桥/振动传递特性/有限元方法Key words
double cylindrical shell/acoustic bridge/vibration transmission characteristics/finite element method分类
交通工程引用本文复制引用
刘子豪,周富霖,李兵,彭子龙,范军..舰船舷间双层声桥声振传递特性研究[J].中国舰船研究,2024,19(3):292-301,10.
