双层阻抗复合吸声结构的优化设计

Optimization of Compound Impedance in a Double Layer Sound Absorbing Structure

研究了由穿孔板及吸声材料构成的双层阻抗复合吸声结构及其吸声性能模型 ,针对该结构多参数及噪声频带优化的特点 ,建立了吸声降噪优化数学模型 .并以某地下电站厂房降噪为例 ,对双层阻抗复合吸声结构的各几何参数和物理参数进行了优化设计 .

The absorbing structure and its acoustical model of compound impedance in a double layer is studied, and its optimum mathematical model is constructed based on the multi parameter and the frequency band optimization. The optimum results of the sound absorbing structure are presented for a power factory room in a given example.