In this paper,we propose a homogenization theory for designing graded viscoelastic sonic crystals（VSCs） which consist of periodic arrays of elastic scatterers embedded in a viscoelastic host material.We extend an el...In this paper,we propose a homogenization theory for designing graded viscoelastic sonic crystals（VSCs） which consist of periodic arrays of elastic scatterers embedded in a viscoelastic host material.We extend an elastic homogenization theory to VSC by using the elastic-viscoelastic correspondence principle and propose an analytical effective loss factor of VSC.The results of VSC and the equivalent structure calculated by using the finite element method are in good agreement.According to the relation of the effective loss factor to the filling fraction,a graded VSC plate is easily and quickly designed.Then,the graded VSC may have potential applications in the vibration absorption and noise reduction fields.展开更多
Subject Code:A04 Supported by the National Natural Science Foundation of China,a research group from Wuhan University,led by Profs.Liu Zhengyou(刘正猷)and Qiu Chunyin(邱春印),demonstrated the topological valley transp...Subject Code:A04 Supported by the National Natural Science Foundation of China,a research group from Wuhan University,led by Profs.Liu Zhengyou(刘正猷)and Qiu Chunyin(邱春印),demonstrated the topological valley transport of sound in sonic crystals,which was published in Nature Physics(2017,13:369—374).展开更多
With the support by the National Natural Science Foundation of China,the research team led by Prof.Lu MingHui(卢明辉)and Prof.Chen YanFeng(陈延峰)at the National Laboratory of Solid State Microstructures,Department of...With the support by the National Natural Science Foundation of China,the research team led by Prof.Lu MingHui(卢明辉)and Prof.Chen YanFeng(陈延峰)at the National Laboratory of Solid State Microstructures,Department of Materials Science and Engineering,Nanjing University,has realized the higher-order topological insulators(HOTIs)in two-dimensional(2D)sonic crystals(SCs).This work was conducted in collaboration with the group led by Prof.Jiang JianHua(蒋建华)from Soochow University,and published in Nature Physics(doi:10.1038/s41567-019-0472-1).展开更多
基金supported by the National Basic Research Program of China(Grant No.2011CB610301)
文摘In this paper,we propose a homogenization theory for designing graded viscoelastic sonic crystals（VSCs） which consist of periodic arrays of elastic scatterers embedded in a viscoelastic host material.We extend an elastic homogenization theory to VSC by using the elastic-viscoelastic correspondence principle and propose an analytical effective loss factor of VSC.The results of VSC and the equivalent structure calculated by using the finite element method are in good agreement.According to the relation of the effective loss factor to the filling fraction,a graded VSC plate is easily and quickly designed.Then,the graded VSC may have potential applications in the vibration absorption and noise reduction fields.
文摘Subject Code:A04 Supported by the National Natural Science Foundation of China,a research group from Wuhan University,led by Profs.Liu Zhengyou(刘正猷)and Qiu Chunyin(邱春印),demonstrated the topological valley transport of sound in sonic crystals,which was published in Nature Physics(2017,13:369—374).
文摘With the support by the National Natural Science Foundation of China,the research team led by Prof.Lu MingHui(卢明辉)and Prof.Chen YanFeng(陈延峰)at the National Laboratory of Solid State Microstructures,Department of Materials Science and Engineering,Nanjing University,has realized the higher-order topological insulators(HOTIs)in two-dimensional(2D)sonic crystals(SCs).This work was conducted in collaboration with the group led by Prof.Jiang JianHua(蒋建华)from Soochow University,and published in Nature Physics(doi:10.1038/s41567-019-0472-1).
