Experimental, numerical and analytical investigation of 2D tetra-anti-chiral structure under compressive loads

Tabacu, Ştefan; Negrea, Raluca; Negrea, Denis

doi:10.1016/j.tws.2020.106929

Cited by 36 publications

(11 citation statements)

References 51 publications

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“…Up to now, a variety of material structures have been derived [14][15][16][17][18]. The more intensively studied structures with relatively mature technology include bucklicrystals structures [19][20][21][22], auxetic foam structures [23], re-entrant honeycombs structures [24][25][26][27], 3-4-6 star array structures [28], chiral [29][30][31][32] and anti-chiral [33][34][35][36][37][38] structures and novel hybrid re-entrant and chiral structures [39][40][41][42][43]. Zhang et al [44] proposed an in-plane impact resistance and energy absorption properties of the material at constant velocities using numerical simulations based on a bionic re-entrant honeycomb model.…”

Section: Introductionmentioning

confidence: 99%

In-plane compression behavior of meta-tetrachiral and common auxetic structures

Zhuang,

Zhu

2024

Phys. Scr.

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Meta-tetrachiral structure, as a novel negative Poisson's ratio auxetic materials, combines the topological features of tetrachiral and anti-tetrachiral structures. Under the in-plane compression, comparative study on the mechanical properties of the meta-tetrachiral and the common tetrachiral and anti-tetrachiral structures is investigated experimentally and numerically. Three types of specimens are fabricated by using Stereo Lithography Apparatus (SLA) technology; numerical models are established by using FEA software, and verified by quasi-static compression tests. The simulated and experimental results together indicate that the in-plane deformation patterns of the meta-tetrachiral are limited by the different loading directions. The deformation mechanism of the meta-tetrachiral loaded along different directions is summarized by the deformation behavior of the specimens. The Young's modulus of the meta-tetrachiral loaded along different directions are larger than that of the anti-tetrachiral structure. The auxetic properties (NPR) of the meta-tetrachiral structures loaded along different directions are superior to that of the tetrachiral structure. In addition, it is found that the meta-tetrachiral loaded along the Y-direction shows a better performance in terms of energy absorption compared to the other structures. The effect of the meta-tetrachiral structures with different wall thicknesses on energy absorption was investigated.

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Section: Introductionmentioning

confidence: 99%

In-plane compression behavior of meta-tetrachiral and common auxetic structures

Zhuang,

Zhu

2024

Phys. Scr.

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“…In recent years, many studies have been conducted on various mechanical metamaterials, including multistable, bimode/ pentamode, and programmable metamaterials, as well as metamaterials with negative swelling, negative stiffness, and negative compressibility. [21] Auxetic materials can be classified on the basis of architectural configuration as follows: chiral, [22,23] reentrant, [24,25] rotational, [26,27] antichiral, [28,29] foam, [30] and porous [31] structures. To this long list, multiscale and reprogrammable metamaterials can also be added.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Mechanical Properties of Auxetic Metamaterials by Incorporating Nonrectangular Cross Sections into Their Component Rods: A Finite Element Analysis

Kavakli

Davar

2023

Physica Status Solidi (b)

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Herein, four prevalent architectures of metamaterials, namely, the arc‐star, star, reentrant, and antichiral models, are examined to study the effects of the cross‐sectional shapes of component rods on the stiffness and Poisson's ratios of the materials. Four differently sized cross sections of rods are designed, and two types of cross‐sectional geometries—square and I‐shaped—are adopted. Aspect ratios of 0.5, 0.75, and 1 are considered for the I‐shaped cross‐sectional models. A total of 64 metamaterial models are analyzed. The results show that the stiffness and negative Poisson's ratios of the metamaterials depend primarily on their architectures. For example, the antichiral model exhibits approximately 13 times more stiffness than its arc‐star counterpart. The cross‐sectional geometries of the component rods also play an essential role in the mechanical behaviors of the metamaterials. For instance, the antichiral architecture, which consists of bars with an I‐shaped section that has a width‐to‐height ratio of 0.5, has an elastic modulus 9 times greater than that of the model composed of bars with a square cross section. This study shows that it is possible to design metamaterials several times stronger simply by changing the shape of the cross section of their constituent elements without compromising on their lightweight property.

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“…[35][36][37][38][39][40] Some researchers have studied the effect of geometric parameters on mechanical properties of tetra-anti-chiral auxetic structures of various polymeric materials. [10,17,19,41,42] However, very limited research work has been reported on studying the influence of process parameters of material extrusion on mechanical properties of tetra-anti-chiral structures. In the present work, the effect of process parameters on strength (σ), modulus (E), and specific energy absorption (SEA) of tetra-anti-chiral structure is investigated.…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation for mechanical properties of tetra‐anti‐chiral auxetic structures of polymer under compressive loading

Teraiya

Vyavahare

Kumar

2022

Polymer Engineering & Sci

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In the present work, an experimental investigation is performed to study the influence of process parameters on mechanical properties of tetra-anti-chiral auxetic structures manufactured by material extrusion (ME) technique of additive manufacturing (AM). Process parameters namely layer height, print speed, and print temperature are considered, while responses are compressive strength (σ), modulus (E), and specific energy absorption (SEA). Specimens of acrylonitrile-butadiene-styrene (ABS) polymer are fabricated and then tested under compressive loading. From the experimental results, it is observed that all process parameters significantly influence the mechanical properties of the structure. Scanning electron microscope (SEM) is used to study microstructural defects of the tested specimen. To maximize the responses, optimization of process parameter is performed using desirability function approach. Regressive models are developed to predict the mechanical properties.

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Experimental, numerical and analytical investigation of 2D tetra-anti-chiral structure under compressive loads

Cited by 36 publications

References 51 publications

In-plane compression behavior of meta-tetrachiral and common auxetic structures

In-plane compression behavior of meta-tetrachiral and common auxetic structures

Enhancing the Mechanical Properties of Auxetic Metamaterials by Incorporating Nonrectangular Cross Sections into Their Component Rods: A Finite Element Analysis

Parametric investigation for mechanical properties of tetra‐anti‐chiral auxetic structures of polymer under compressive loading

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