Quasi-static crushing behavior of novel circular double arrowed auxetic honeycombs: Experimental test and numerical simulation

Jiang, Feng; Yang, Shu; Ding, Chen; Qi, Chen

doi:10.1016/j.tws.2022.109434

Cited by 34 publications

(8 citation statements)

References 47 publications

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“…Honeycomb is a widely used energy-absorbing structure. Many researchers have introduced and studied NPR honeycomb structure to enhance energy-absorbing ability [28,43,44]. The effective Poisson's ratio and elastic modulus of periodic SACS honeycomb structures and corresponding unit cells are further studied through finite element simulations.…”

Section: Sacs Metamaterialsmentioning

confidence: 99%

In-plane elastic property prediction of straight-arc coupled auxetic structures

Zhang

Hao

et al. 2023

J. Phys. D: Appl. Phys.

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Auxetic metamaterials with two component exhibit widely potential engineering applications due to their exotic mechanical properties. In this work, a novel straight-arc coupled structure (SACS) is designed by introducing a circular arc structure to a classical re-entrant structure. This work aims to explore the linear and geometrical nonlinear mechanical of SACS at large strains. According to the Castigliano’s second theorem, the in-plane linear theoretical model is established to obtain equivalent Poisson's ratio and elastic modulus. A geometrical nonlinear model is further established based on large deflection theory and chain algorithm. The finite element method is used to verify the prediction of the theoretical solution, and linear and nonlinear mechanical properties of the SACS are studied by numerical simulation. The influence of geometric parameters re-entrant angle and arc radius on the mechanical properties of the SACS is investigated to compare the linear and nonlinear mechanical properties. The linear numerical simulation of straight-arc coupled structure with two transverse ribs (SACS-TR) and classical re-entrant honeycomb structure with two transverse ribs (CRS-TR) with the same dimension is carried out to analyze the in-plane elastic properties. These results demonstrate that considering the geometric nonlinear can predict the actual structural deformation more accurately, which is verified by the quasi-static compression experiment results at large strains. The straight-arc coupled structure design can enhance the auxetic effect and structure Young’s moduli under same dimension.

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Section: Sacs Metamaterialsmentioning

confidence: 99%

In-plane elastic property prediction of straight-arc coupled auxetic structures

Zhang

Hao

et al. 2023

J. Phys. D: Appl. Phys.

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“…Wang et al [30] proposed a novel three-dimensional NPR performance structure based on the traditional inner concave hexagon and verified its good energy absorption properties through finite element simulation and experiments. Jiang et al [31] introduced double circular arc walls to the double arrowhead structure and designed three optimized configurations, which were shown to have higher crushing stress, crushing force efficiency, and specific energy absorption by finite element analysis and experiments. Logakannan et al [32] designed a structural configuration based on a concave-angle diamond structure incorporating cross-linked members, which is capable of improving strength with good energy absorption.…”

Section: Introductionmentioning

confidence: 99%

Impact resistance of a double re-entrant negative poisson’s ratio honeycomb structure

Hai,

Chen,

Wang

et al. 2024

Phys. Scr.

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Auxetic metamaterials, usually consisting of cellular solids or honeycombs, exhibit the advantages of high designability and tunability. In particular, the negative Poisson’s ratio (NPR) property endows them with innovative mechanical properties and makes them promising for a wide range of applications. This paper proposes a modified double re-entrant honeycomb (MDRH) structure and explores its Young's modulus and Poisson's ratio through theoretical derivation and finite element analysis. Additionally, it discusses the relationship between these parameters and the concave angle. Furthermore, the deformation mode, nominal stress-strain curve, and specific energy absorption of this MDRH are investigated for different impact velocities and compared with traditional re-entrant honeycomb (TRH) materials. The results show that the MDRH honeycomb structure greatly widens the range of effective modulus and NPR values. At different impact velocities, the MDRH exhibits high plateau stress and specific energy absorption, indicating good impact resistance. These results provide a theoretical foundation for the design and implementation of new energy-absorbing structures.

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“…Traditional honeycomb structures [1] are inspired by honeycombs in nature and consist of hexagonal cells arranged in a periodic manner. Subsequently, to meet more practical engineering requirements, researchers have improved traditional honeycomb structures and proposed numerous innovative materials and structures with excellent properties, including re-entrant structures, [2,3] star structures, [4,5] double-arrow structures, [6,7] chiral structures, [8,9] corrugated structures, [10,11] rotating rigid structures, [12,13] and irregular structures, [14,15] among others. These structures exhibit potential for exceptional mechanical properties in engineering materials [16,17] and are widely utilized in construction, automotive, aerospace, and other areas susceptible to collisional impacts.…”

Section: Introductionmentioning

confidence: 99%

In‐Plane Impact Characteristics of Auxetic Rotating Triangular Honeycomb Inspired by a Rotating Rigid Structure

Chen,

Huang,

Deng

2024

Adv Eng Mater

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Inspired by rotating rigid structures, an auxiliary rotating triangular honeycomb structure (ARTH) is designed in this paper. The structure has dual platform stress, which can reduce the initial peak stress generated during collisions, reducing injuries to pedestrians and vehicle occupants. The accuracy of the finite element numerical model is verified by experiments, and a series of researches are carried out. The mechanical properties of the structure at different velocities are studied and the classification diagram of deformation modes is obtained. Under low‐speed impact load, ARTH has two deformation stages and two stress plateau regions, in which the stress of the second plateau is more than twice that of the first plateau. Then, a theoretical model based on plastic dissipation theory predicts the stress platform at different deformation stages under quasi‐static conditions. Parametric analysis shows that increasing wall thickness t can significantly improve the stress platform and energy absorption, but the negative Poisson’s ratio effect is weakened. The influence of angle θ on the first stage deformation of ARTH is significant. These studies can provide some references for the design of double‐platform stress and the reduction of initial peak stress of rotating auxiliary structures.This article is protected by copyright. All rights reserved.

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Quasi-static crushing behavior of novel circular double arrowed auxetic honeycombs: Experimental test and numerical simulation

Cited by 34 publications

References 47 publications

In-plane elastic property prediction of straight-arc coupled auxetic structures

In-plane elastic property prediction of straight-arc coupled auxetic structures

Impact resistance of a double re-entrant negative poisson’s ratio honeycomb structure

In‐Plane Impact Characteristics of Auxetic Rotating Triangular Honeycomb Inspired by a Rotating Rigid Structure

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