Figure 2. Finite Element Method model for calculating the sound transmission loss of double-sided framed plate-type acoustic metamaterials--图2. 双面框架式板型声学超材料声传输损失的有限元模型--
Figure 3. Sound transmission loss of metamaterial structures--图3. 超材料结构的声传输损失--Figure 4. Vibration modes of the metamaterial structure at sound insulation peak and dip frequencies--图4. 超材料结构在隔声峰和隔声谷频率的振动模态图--Figure 5. The equivalent surface mass density of metamaterial structures--图5. 超材料结构等效质量面密度曲线--
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