A Matryoshka-like seismic metamaterial with wide band-gap characteristics
A Matryoshka-like seismic metamaterial with wide band-gap characteristics
复制标题
具有宽带隙特性的类俄罗斯套娃地震超材料
DOI：
10.1016/j.ijsolstr.2019.08.032
复制
发表时间：
2020-03
影响因子：
3.6
通讯作者：
Qiujiao Du
中科院分区：
文献类型：
--
作者：
Yi Zeng;Yang Xu;Hongwu Yang;Muhammad Muzamil;Rui Xu;Keke Deng;Pai Peng;Qiujiao Du
地震面波是一种复杂的波，衰减困难，应用于土木工程中的地震异向介质可以控制和阻隔地震面波，以保护核电站和古建筑等敏感建筑。本文设计了一种基于类矩阵结构的地震超材料。用有限元法模拟了光纤的色散曲线和传输特性。通过对不同层数的类Matryoshka地震异向介质色散曲线的对比研究发现，Matryoshka层数越多，其禁带越多，谐振模式越多，禁带越宽。此外，计算和分析了类Matryoshka地震异向材料的振动模式，阐明了带隙展宽的机理。证明了类Matryoshka地震异向介质在衰减0.1-13.1 Hz范围内的表面波方面的有效性。虽然我们专注于地球物理结构，所提出的超材料提供了可能的替代各种现象，如振动和噪声衰减，因为带隙的中心频率可以很容易地通过调制的材料和几何参数。
Seismic surface waves, composed of many complex waves and difficult to attenuate, can be controlled and obstructed by seismic metamaterials applied in civil engineering to protect sensitive buildings, such as nuclear power plants and ancient buildings. In this paper, a seismic metamaterial based on Matryoshka-like structure is designed. The dispersion curves and transmission are simulated by using finite element method. Comparative study on the dispersion curves of Matryoshka-like seismic metamaterial with different layers shows that the more layers the Matryoshka has, the more band gaps, the more resonant modes and the wider band gap are provided. Moreover, the vibration modes for Matryoshka-like seismic metamaterial are computed and analyzed to clarify the mechanism of widening band gaps. And the effectiveness of the Matryoshka-like seismic metamaterial in attenuating surface waves within the 0.1–13.1 Hz regime are demonstrated. Although we focus on geophysical structure, the proposed metamaterial provides possible alternative for various phenomena such as the vibration and noise attenuation because the center frequencies of band gaps can be easily achieved by modulating the material and geometrical parameters.
登录
查看更多内容
影响因子：
3.2
作者：
Yi Zeng;Yang Xu;Keke Deng;Z. Zeng;Hongwu Yang;M. Muzamil;Qiujiao Du
通讯作者：
Yi Zeng;Yang Xu;Keke Deng;Z. Zeng;Hongwu Yang;M. Muzamil;Qiujiao Du
影响因子：
3.3
作者：
Achaoui, Y.;Antonakakis, T.;Guenneau, S.
通讯作者：
Guenneau, S.
影响因子：
4.7
作者：
Kroedel, S.;Thome, N.;Daraio, C.
通讯作者：
Daraio, C.
影响因子：
5.3
作者：
Colquitt, D. J.;Colombi, A.;Guenneau, S. R. L.
通讯作者：
Guenneau, S. R. L.
影响因子：
4.6
作者：
Brûlé S;Javelaud EH;Enoch S;Guenneau S
通讯作者：
Guenneau S