噪声与振动控制2017，Vol.37Issue(3)：31-36,6.DOI:10.3969/j.issn.1006-1355.2017.03.006
加筋圆柱壳声辐射特性研究及声学优化设计
Research of Sound Radiation Characteristics of a Stiffened Cylindrical Shell and Its Acoustic Optimal Design
摘要
Abstract
In order to study the full-band acoustic radiation characteristics of stiffened cylindrical shells, the low frequency computation model based on FE-BEM method, the mid frequency computation model based on FE-SEA method and the high frequency computation model based on SEA method are established in VA-ONE. The sound radiation power of the stiffened cylindrical shell is computed and analyzed with these models. From the point of view of the inherent modals of the structure, the acoustic radiation efficiency of each modal is studied. The results show that the reinforcement can reduce the total sound radiated power of the cylindrical shell structure especially in the low frequency band. In the medium and low frequency region, the modal radiation efficiencies of different vibration modes are quite different. In the medium and high frequency region, their difference is not obvious. Furthermore, the influence of the excitation position, shell thickness, material property and radiation medium on the acoustic radiation characteristics of the stiffened cylindrical shell is studied. In order to reduce the sound radiation power of the stiffened cylindrical shell to the external field, the acoustic optimal design is carried out based on the NCT module and Design Optimization module. The results show that the combination of GA algorithm with SQP algorithm or MMA algorithm can reduce the computation time and yield a better optimization scheme.关键词
声学/加筋圆柱壳/全频段/声辐射/声学优化Key words
acoustics/stiffened cylindrical shell/whole frequency range/sound radiation/acoustic optimization分类
通用工业技术引用本文复制引用
张波,向阳,李飞,郭宁,肖鸿飞..加筋圆柱壳声辐射特性研究及声学优化设计[J].噪声与振动控制,2017,37(3):31-36,6.基金项目
国家自然科学基金资助项目(51079118,51279148) （51079118,51279148）
武汉理工大学自主创新研究基金项目(175205008) （175205008）
