期刊
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
卷 170, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2022.108836
关键词
Elastic metamaterials; Nonlinear resonator; Bragg band-gap; Local resonance band-gap; Ultralow frequency; Vibration isolation
资金
- National Natural Science Foundation of China [11872037, 11,872,159, 11572182]
- Program of Shanghai Municipal Education Commission [2017-01-07-00-09-E00019]
This study proposes an approach to explore the band energy structures of elastic metamaterials using the Hamilton principle, Bloch theorem, and finite-element method. Experimental verification on ultralow frequency metamaterials with nonlinear resonators confirms the broadband isolation of longitudinal and transverse waves.
Elastic wave propagation in solids composed of elastic metamaterials always exists as both transverse and longitudinal waves simultaneously. By using the Hamilton principle, Bloch theorem, and finite-element method, an approach is proposed to explore the band energy structures of the metamaterial, this is observed in an experiment on an ultralow frequency metamaterial periodically positioned nonlinear resonators and this means the broadband isolation of both longitudinal and transverse waves was verified. Comparison of the propagation of transverse and longitudinal waves in the ultralow frequency metamaterials, the Bragg band-gaps (BBGs) and local resonance band-gaps (LRBGs) differ with both the frequency of the bandwidth and the depth of the band-gap.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据