Details
| Original language | English |
|---|---|
| Article number | 110760 |
| Journal | Materials and design |
| Volume | 219 |
| Early online date | 26 May 2022 |
| Publication status | Published - Jun 2022 |
Abstract
We present a methodology to perform inverse design of reconfigurable topological insulators for flexural waves in plate-like structures. A genetic algorithm based topology optimization method is developed and a C6v plate unit cell topology that offers twofold degeneracy in the band structure is designed. Piezoelectric patches, that are connected to an external circuit, are bonded to the substrate plate and are altered appropriately to break space inversion symmetry. The space inversion symmetry breaking opens a topological band gap mimicking quantum valley Hall effect. Numerical simulations demonstrate that the topologically protected edge state exhibits wave propagation without backscattering and is immune to disorders. The present work achieves real-time reconfigurability of the topological interfaces for waveguide applications.
Keywords
- Genetic algorithm, Piezoelectric phononic plate, Topological insulator, Topology optimization
ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials and design, Vol. 219, 110760, 06.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Inverse design of reconfigurable piezoelectric topological phononic plates
AU - Zhuang, Xiaoying
AU - Nguyen, Chuong
AU - Nanthakumar, S. S.
AU - Chamoin, Ludovic
AU - Jin, Yabin
AU - Rabczuk, Timon
N1 - Funding Information: The authors would like to thank support of ERC Starting Grant (802205) within Horizon 2020 and Heisenberg-Programme from DFG (ZH 459/5-1).
PY - 2022/6
Y1 - 2022/6
N2 - We present a methodology to perform inverse design of reconfigurable topological insulators for flexural waves in plate-like structures. A genetic algorithm based topology optimization method is developed and a C6v plate unit cell topology that offers twofold degeneracy in the band structure is designed. Piezoelectric patches, that are connected to an external circuit, are bonded to the substrate plate and are altered appropriately to break space inversion symmetry. The space inversion symmetry breaking opens a topological band gap mimicking quantum valley Hall effect. Numerical simulations demonstrate that the topologically protected edge state exhibits wave propagation without backscattering and is immune to disorders. The present work achieves real-time reconfigurability of the topological interfaces for waveguide applications.
AB - We present a methodology to perform inverse design of reconfigurable topological insulators for flexural waves in plate-like structures. A genetic algorithm based topology optimization method is developed and a C6v plate unit cell topology that offers twofold degeneracy in the band structure is designed. Piezoelectric patches, that are connected to an external circuit, are bonded to the substrate plate and are altered appropriately to break space inversion symmetry. The space inversion symmetry breaking opens a topological band gap mimicking quantum valley Hall effect. Numerical simulations demonstrate that the topologically protected edge state exhibits wave propagation without backscattering and is immune to disorders. The present work achieves real-time reconfigurability of the topological interfaces for waveguide applications.
KW - Genetic algorithm
KW - Piezoelectric phononic plate
KW - Topological insulator
KW - Topology optimization
UR - http://www.scopus.com/inward/record.url?scp=85131806698&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2022.110760
DO - 10.1016/j.matdes.2022.110760
M3 - Article
AN - SCOPUS:85131806698
VL - 219
JO - Materials and design
JF - Materials and design
SN - 0264-1275
M1 - 110760
ER -