Abstract

The topology concept in the condensed physics and acoustics is introduced into the elastic wave metamaterial plate, which can show the topological property of the flexural wave. The elastic wave metamaterial plate consists of the hexagonal array which is connected by the piezoelectric shunting circuits. The Dirac point is found by adjusting the size of the unit cell and numerical simulations are illustrated to show the topological immunity. Then the closing and breaking of the Dirac point can be generated by the negative capacitance circuits. These investigations denote that the topological immunity can be achieved for flexural wave in mechanical metamaterial plate. The experiments with the active control action are finally carried out to support the numerical design.

Details

Title
Active control on topological immunity of elastic wave metamaterials
Author
Guan-Hua, Li 1 ; Tian-Xue, Ma 2 ; Wang Yi-Ze 3 ; Yue-Sheng, Wang 4 

 Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, China (GRID:grid.181531.f) (ISNI:0000 0004 1789 9622) 
 University of Siegen, Department of Civil Engineering, Siegen, Germany (GRID:grid.5836.8) (ISNI:0000 0001 2242 8751) 
 Tianjin University, Department of Mechanics, Tianjin, China (GRID:grid.33763.32) (ISNI:0000 0004 1761 2484) 
 Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, China (GRID:grid.181531.f) (ISNI:0000 0004 1789 9622); Tianjin University, Department of Mechanics, Tianjin, China (GRID:grid.33763.32) (ISNI:0000 0004 1761 2484) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2412149801
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.