Abstract: According to FEA methods to calculate the transmission loss(TL) of membrane-type acoustic metamaterials. Morever, to explore the connection between frequencies of absorbed peaks(valleys) and eigenfrequencies of the whole system in the membrane-type acoustic metameterials. Then Apply the adjustments of micro structural parameters such as thickness, amplitude of center mass, prepress to learn the relationship of eigenfrequencies and absorbed peaks(valleys) of membrane-type acoustic metamaterials. The main conclusions are the corresponding frequencies of the absorption peaks (valleys) increase with the increase of the prestress of the membrane edge. The increase of membrane thickness leads to the decrease of the frequencies of transmission loss of the second peak and the third peak. And the amplitude of the central mass of the membrane only affect the frequencies of the first peaks (valleys).

摘要： 基于有限元法（FEA）计算薄膜型声学超材料的传递损失（TL），探索薄膜型声学超材料吸收峰值（谷值）对应的频率与整个薄膜超材料系统的固有频率之间的关联，并通过调整薄膜声学超材料的微结构特征如薄膜厚度、中心质量块、预应力等参量，研究薄膜型声学超材料固有频率和峰值（谷值）频率频段之间的关系。主要结论是：薄膜边缘预应力的增大则吸收峰值（谷值）对应频率增大，薄膜厚度增加则传递损失的第二和第三峰值对应的频率降低，而薄膜胞元中心质量块质量大小仅对第一峰值（谷值）对应的频率产生显著的影响。

关键词: 薄膜型超材料, 传递损失, 吸收峰值, 结构特征, 固有频率, Membrane-Type Acoustic Metamaterials, Transmission loss, Absorbed Peaks, Structural parameters, Eigenfrequencies