Vibration attenuation of meta-mortar with spring-mass resonators

Metamaterial based on local resonance has excellent vibration attenuation ability in low frequency. In this research, an attempt was performed to make meta-mortar with spring-mass resonators to attenuate vibration and shock hazards. Single-spring-mass resonators and dual-spring-mass resonators were...

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Bibliographic Details
Published inDefence technology Vol. 20; pp. 11 - 23
Main Authors Liu, San-feng, Chen, Hai-long, Liu, Yang, He, Hu-guang, An, Xi-yue, Jin, Feng-nian, Fan, Hua-lin
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2023
KeAi Communications Co., Ltd
Subjects
Meta-mortar
Spring-mass resonators
Vibration attenuation
Vibration attenuation
Spring-mass resonators
Meta-mortar
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Summary:Metamaterial based on local resonance has excellent vibration attenuation ability in low frequency. In this research, an attempt was performed to make meta-mortar with spring-mass resonators to attenuate vibration and shock hazards. Single-spring-mass resonators and dual-spring-mass resonators were designed and made using lead or aluminum blocks and SWPB springs encased by PMMA (polymethyl methacrylate) or aluminum frames. These resonators were placed into mortar blocks to make meta-mortar specimens. Vibration attenuation effect was investigated by sweeping vibration with frequency from 50 Hz to 2000 Hz. All these meta-mortar blocks exhibit excellent vibration attenuation ability in the designed band gaps. With dual-spring-mass resonators, meta-mortar blocks have two distinct vibration attenuation bands.
ISSN:2214-9147
2214-9147
DOI:10.1016/j.dt.2022.04.005