噪声与振动控制Issue(1)：23-28,6.DOI:10.3969/j.issn.1006-1335.2015.01.005
采用波叠加法技术求解加肋板的辐射声功率
Wave Superposition Method Applied to the Calculation of Radiation Sound Power of a Stiffened Plate
摘要
Abstract
A method for calculating the radiation sound power of a stiffened plate was proposed using the principle of wave superposition. First of all, Fourier transform or element volume-velocity match was applied to the structural dynamic equation, and the volume velocity of the structure elements was obtained. According to the compatibility condition between the structure and the medium, a set of algebraic equations was established for calculating the virtual sound source intensity and the element volume velocity. Furthermore, the virtual sound source intensity could be used to compute the radiation sound power of the structure. Two methods were provided which can be used to compute the sound power of the stiffened plate without computing the surface pressure. As an example, the structural radiation sound power of a rectangular simply-supported baffled plate was computed. The result was compared with that of the analytical solution. It is shown that both the methods have high precision. Since the method based on the element volume velocity matching principle does not need to calculate the vibration modal coupling matrix, it is more straightforward and simple than the method using Fourier transform.关键词
声学/波叠加/辐射声功率/加肋板Key words
acoustics/wave superposition/radiation sound power/stiffened plate分类
通用工业技术引用本文复制引用
刘宝,王德石,周奇郑..采用波叠加法技术求解加肋板的辐射声功率[J].噪声与振动控制,2015,(1):23-28,6.基金项目
国家自然科学基金资助项目（11372350)；海军工程大学青年基金资助项目（HGDQNSQJJ13006) （）
