Evaluation of shock migration performance for a multi-stable mechanical metamaterial

Aiguo Zhao,Chuang Liu, Yelin Zheng,Anfu Zhang, Peng He,Hong Chen,Gang Wu,Mangong Zhang,Tao Wu,Guoqing Gu

Composite Structures（2023）

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摘要

•A multi-stable metamaterial considering viscoelasticity were proposed and fabricated.•Successive collapse of protype is observed both in quasi-static and shock experiments.•The protype reduced shock acceleration from 147 g to 22 g in drop-impact testing.•The reaction force of protype increased by 50% when considering viscoelasticity.

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关键词

Shock mitigation performance, Energy absorption, Mechanical metamaterials, Viscoelastic properties

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