摘要
Combining periodic layered structure with three-dimensional cylindrical local resonators,a hybrid metastructure with improved wave isolation ability was designed and investigated through theoretical and numerical approaches.The metastructure is composed of periodic rubber layers and concrete layers embedded with three-dimensional resonators,which can be freely designed with multi local resonant frequencies to attenuate vibrations at required frequencies and widen the attenuation bandgap.The metastructure can also effectively attenuate seismic responses.Compared with layered rubber-based structures,the metastructure has more excellent wave attenuation effects with greater attenuation and wider bandgap.
基金
Supports from National Natural Science Foundation of China(Grant Nos.U20A20286 and 11972184)
the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Engineering Safety(Grant No.2021ZDK006)
Natural Science Foundation of Jiangsu Province of China(Grant No.BK20201286)
Science and Technology Project of Jiangsu Province of China(Grant No.BE2020716)are gratefully acknowledged.
