噪声与振动控制2017，Vol.37Issue(6)：107-110,143,5.DOI:10.3969/j.issn.1006-1355.2017.06.022
多设备源激励下水中柱壳结构声振特性研究
Vibro-acoustic Characteristics of Submerged Cylindrical Shells under Multiple Excitations
摘要
Abstract
Vibration and sound radiation characteristics of submerged finite cylindrical shells under multiple excitations are researched. Based on thin shell theory, the vibro-acoustic coupling equations of the shell under multiple excitations are established. Then, the analytical solutions of the vibration response and the sound radiation power of the shell are formulated in terms of modal expansion method. Influences of the multiple excitations on the vibration response and acoustic radiation of the shell are analyzed. The results show that the vibration response and radiation power decrease with the increase of the spacing of the excitations. Circumferential excitations can hardly trigger the vibration and acoustic radiation of the shell. Concentration of the axial excitation forces can induce strong vibration response and acoustic radiation. Enlarging the contact area of the excitation force can lead to good sound insulation effects. Results of the research can provide a theoretical basis for vibration and noise control of underwater vehicles.关键词
声学/圆柱壳体/模态展开法/多源激励/声振特性Key words
acoustics/cylindrical shell/modal expansion method/multiple excitations/vibro-acoustic characteristics分类
通用工业技术引用本文复制引用
高晟耀,缪旭弘,王雪仁,周奇郑..多设备源激励下水中柱壳结构声振特性研究[J].噪声与振动控制,2017,37(6):107-110,143,5.基金项目
国家自然科学基金资助项目(50875259 （）
11372350) （）
