噪声与振动控制2012，Vol.32Issue(4)：116-120,5.DOI:10.3969/j.issn.1006-1355.2012.04.026
薄板结构辐射声功率及其灵敏度分析
Study of Radiated Sound Power and Its Sensitivity Analysis of Plate
刘聪 1姜哲1
作者信息
- 1. 江苏大学振动噪声研究所,江苏镇江212013
- 折叠
摘要
Abstract
Joint using the finite element method and acoustic radiation modal method to solve the sound power structure sheet radiation, the structure radiation sound power about the design variable sensitivity was analyzed. In the structure vibration link, surface vibration velocity was obtained using the finite element method; in the sound radiation link, the sound field information about radiation of surface vibration can be obtained by expansions of the acoustic radiation modes. For the radiation of a stiffened panel, sound power sensitivity with respect to design variable was analyzed, and the results showed that the sound power was reduced by using stiffeners when the excitation frequency was far from the natural frequency of the body, but it had negative influence and was useless by using stiffeners when the natural frequency was close to the excitation frequency.关键词
声学/灵敏度分析/有限元法/声辐射模态/声功率Key words
acoustics/ sensitivity analysis / finite element method / acoustic radiation mode / sound power分类
通用工业技术引用本文复制引用
刘聪,姜哲..薄板结构辐射声功率及其灵敏度分析[J].噪声与振动控制,2012,32(4):116-120,5.
