In-Plane Crashworthiness of Graded Hierarchical Hexagonal Honeycombs

ZHOU De; ZHAO Ruochao; TAO Yong

doi:10.21656/1000-0887.450306

Volume 46 Issue 11

Nov. 2025

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ZHOU De, ZHAO Ruochao, TAO Yong. In-Plane Crashworthiness of Graded Hierarchical Hexagonal Honeycombs[J]. Applied Mathematics and Mechanics, 2025, 46(11): 1378-1393. doi: 10.21656/1000-0887.450306

Citation:

ZHOU De, ZHAO Ruochao, TAO Yong. In-Plane Crashworthiness of Graded Hierarchical Hexagonal Honeycombs[J]. Applied Mathematics and Mechanics, 2025, 46(11): 1378-1393. doi: 10.21656/1000-0887.450306

Citation:

ZHOU De, ZHAO Ruochao, TAO Yong. In-Plane Crashworthiness of Graded Hierarchical Hexagonal Honeycombs[J]. Applied Mathematics and Mechanics, 2025, 46(11): 1378-1393. doi: 10.21656/1000-0887.450306

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In-Plane Crashworthiness of Graded Hierarchical Hexagonal Honeycombs

doi: 10.21656/1000-0887.450306

ZHOU De^1,2,
ZHAO Ruochao³,
TAO Yong^{1
,
,}

1. School of Civil Engineering,Central South University, Changsha 410083, P.R.China;
2. Hunan Tieyuan Civil Engineering Testing Co., Ltd., Changsha 410004, P.R.China;
3.School of Traffic & Transportation Engineering, Central South University, Changsha 410083, P.R.China

Funds:

The National Science Foundation of China(1247022172)

Received Date: 2024-11-12
Rev Recd Date: 2024-12-19

Available Online: 2025-12-05

Abstract

Abstract

Gradient and hierarchical designs have their own advantages in improving the mechanical and energy-absorption properties of honeycombs. Inspired by natural honeycomb, a novel gradient hierarchical hexagonal honeycomb (GHHH) was proposed based on gradient honeycombs and hierarchical honeycombs, to combine the concepts of gradient design with variable wall thicknesses and vertex hierarchical design. The GHHH specimens were fabricated with the additive manufacturing technology. The in-plane crashworthiness of the novel GHHH was investigated through experiments and numerical simulations, and the effects of gradient design and hierarchical design on the in-plane crashworthiness of GHHH were analyzed and compared. The results show that, the combination of gradient design and hierarchical design can significantly increase the in-plane crashworthiness of honeycomb materials, and a significant negative Poisson’s ratio phenomenon will occur. In addition, the gradient design is more effective in enhancing the mechanical and energy absorption properties of the honeycomb materials than the hierarchical design.
- graded hierarchical honeycomb,
- in-plane,
- crashworthiness,
- additive manufacturing

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References(35)

References

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