利用磁流变弹性体对超材料梁进行带隙调控

Bandgap control of metamaterial beam using magnetorheological elastomers

为了研究在不改变结构的情况下实现对超材料带隙的调节,本文基于磁流变弹性体设计了一种新型超材料梁结构。采用有限元方法,建立了含磁流变弹性体的超材料梁模型,给出了超材料梁结构在外磁场作用下得的带隙位置和传输曲线。结果表明:通过利用外磁场对磁流变弹性体的材料参数进行非接触式控制,可以实现对带隙特性的大幅度调节。研究还发现通过改变结构的几何参数也可以对含磁流变弹性体的超材料梁的带隙进行调节。

To tune the bandgap of metamaterials without changing their beam structures,we designed a new metamaterial beam structure based on a magnetorheological elastomer.The metamaterial beam model with a magnetorheological elastomer was established using the finite element method,and the band gap position and transmission curve of the metamaterial beam structure under the external magnetic field were demonstrated.The results show that the band gap of the metamaterial beam can be greatly adjusted with the external magnetic field and by changing the geometric parameters of the structure.