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本文对劈形吸声结构的性能作半理论半经验的分析,文中以变分法为基础导出平均有效密度和压缩模量的计算公式,分析了声阻抗率的近似公式,讨论从实验得出的一些规律并作了理论解释.
In this paper, semi-theoretical and semi-empirical analysis of the performance of rake-shaped sound-absorption structures is presented. The formulas for the calculation of average effective density and compression modulus are derived based on the variational method. The approximate formula of the acoustic impedance ratio is analyzed and discussed from the experiment. Some of the laws were explained theoretically.