Study on quasi-static mechanical properties of novel reentrant structures with multiple energy dissipation

doi:10.1016/j.tws.2022.109442

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	Study on quasi-static mechanical properties of novel reentrant structures with multiple energy dissipation
	R. Y. Liu; G. F. Yao; Z. Z. Xu; Z. L. Yu; Z. H. Zhang; C. Y. Han; H. Li and S. Jiang
	2022
发表期刊	Thin-Walled Structures
ISSN	0263-8231
卷号	177 页码:11
摘要	The protective characteristics of novel bionic structures inspired by turbulent energy dissipation are studied. From the perspective of small-scale turbulent energy dissipation, the reentrant design of structures is carried out, and combined with rotation characteristics of the chiral structure and bending characteristics of the Euler beam, novel bionic reentrant chiral structures with multi-direction torsional energy dissipation characteristics are further designed and constructed: Single Reentrant Chiral Cubic Structure (SRCCS), Double Reentrant Chiral Cubic Structure (DRCCS), Single Reentrant Chiral Honeycomb Structure (SRCHS), Double Reentrant Chiral Honeycomb Structure (DRCHS), Single Reentrant Chiral Negative Poisson Structure (SRCPS), Double Reentrant Chiral Poisson Structure (DRCPS). The relative elastic modulus, yield stress, and plastic failure stress of novel reentrant chiral structures are analyzed theoretically, and the relationship between the relative density and relative elastic modulus, yield stress, and plastic failure stress of novel reentrant chiral structures are compared. The mechanical properties of novel bionic structures in the quasi-static compression process are analyzed from experiments and simulations. The results show that bionic double torsion reentrant structures have the most excellent properties. Energy absorption and load-carrying capacity of novel bionic reentrant structures are 30 % higher than traditional bionic structures. To better determine the excellent performance of the reentrant chiral structures, the reentrant chiral structures are further studied in combination with the crash of the protective helmet of motorcycle racers. It is obvious from the results that the protective effect of helmets with bionic reentrant chiral structures' sandwich is 25 % higher than the safety helmet with the corrugated sandwich.
DOI	10.1016/j.tws.2022.109442
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67122
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	R. Y. Liu,G. F. Yao,Z. Z. Xu,et al. Study on quasi-static mechanical properties of novel reentrant structures with multiple energy dissipation[J]. Thin-Walled Structures,2022,177:11.
APA	R. Y. Liu.,G. F. Yao.,Z. Z. Xu.,Z. L. Yu.,Z. H. Zhang.,...&H. Li and S. Jiang.(2022).Study on quasi-static mechanical properties of novel reentrant structures with multiple energy dissipation.Thin-Walled Structures,177,11.
MLA	R. Y. Liu,et al."Study on quasi-static mechanical properties of novel reentrant structures with multiple energy dissipation".Thin-Walled Structures 177(2022):11.

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