Abstract：It is found that the hexagonal cell is a common repeating unit with dynamical topological properties in the wave periodic structure. In this work, a hexagonal cell is designed with active control properties. Piezoelectric patches are attached to unit cells and negative capacitance circuits are connected to regulate material parameters. Then, the active control on topological interface transmission and defect protection are achieved. Moreover, the defect protection depends on the structure direction. This investigation introduces the topological concepts of physics and acoustics into the elastic wave metamaterial plate, which can obtain the topological properties and actively controllable characteristics of flexural waves.
收稿日期: 2021-04-27
出版日期: 2022-04-19
基金资助:先进材料和结构的多场耦合动态力学与控制;弹性波动力学;力学超材料的波动能量传输机理与调控
通讯作者:
王毅泽
E-mail: wangyize@tju.edu.cn
引用本文:
孙文静 王毅泽. 弹性波超材料板中拓扑交界态与缺陷保护的主动控制研究[J]. , 2022, 43(2): 131-142.
Wen-Jing Wen-JingSun Yi-Ze Yi-ZeWang. ACTIVE CONTROL ON INTERFACE STATE AND DEFECT PROTECTION OF ELASTIC WAVE METAMATERIALS. , 2022, 43(2): 131-142.
2022, Vol. 43 
