A bio-inspired auxetic metamaterial with two plateau regimes: Compressive properties and energy absorption

Alomarah, Amer; Yuan, Ye; Ruan, Dong

doi:10.1016/j.tws.2023.111175

Cited by 33 publications

(7 citation statements)

References 44 publications

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“…Recently, Alomarah et al [120] developed a novel auxetic metamaterial based on Polyamide11 specimens namely, butterfly-shaped auxetic metamaterial inspired by the geometry of a butterfly by 3D printing method using MJF. Indeed, NPRs were observed during the compression along X and Y directions.…”

Section: Interesting Properties Of Auxetic Structuresmentioning

confidence: 99%

4D printing of fiber-reinforced auxetic structures: the building blocks: a review

Karima,

Habibi,

Laperrière

2024

Smart Mater. Struct.

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Four-dimensional (4D) printing has recently received much attention in the field of smart materials. It concerns using additive manufacturing to obtain geometries that can change shape under the effect of different stimuli. Such a technique enables the fabrication of 3D printed parts with the additional functionality of scalable, programmable, and controllable part shapes over time. This review provides a comprehensive examination of advances in the field of 4D printing, emphasizing the integration of fiber reinforcement and auxetic structures as crucial building blocks. The incorporation of fibers enhances structural integrity, while auxetic design principles contribute unique mechanical properties, such as negative Poisson's ratio and great potential for energy absorption due to their specific deformation mechanisms. Therefore, they present potential applications in aerospace, drones, and robotics.The objective of this review article is first to describe the distinctive properties of shape memory polymers (SMPs), auxetic structures, and composite (fiber-reinforced) materials. A review of applications that use combinations of such materials is also presented when appropriate. The goal is to get a grip on the delicate balance between the different properties achievable in each case. The paper concludes by describing recent advances in 4D printing of fiber-reinforced auxetic structures.

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Section: Interesting Properties Of Auxetic Structuresmentioning

confidence: 99%

4D printing of fiber-reinforced auxetic structures: the building blocks: a review

Karima,

Habibi,

Laperrière

2024

Smart Mater. Struct.

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“…Auxetic cellular materials are a developed category of traditional materials that exhibit negative Poisson's ratio (NPR). [1][2][3][4] Almgren developed the first auxetic structure in 1985, [5] while the auxetic term was not known until 1991 by Evans. [6] Due to their anomalous deformation pattern, auxetics are proposed to be used in a broad range of industries.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Manufacturing Techniques on the Mechanical Performance of an Auxetic Structure Manufactured by Fused Filament Fabrication and Multijet Fusion Processes

Alomarah,

Abbas,

Faisal

et al. 2024

Adv Eng Mater

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Additive manufacturing is increasingly becoming potential for short‐run part production. The aim of this work is to explore the mechanical properties of a hybrid auxetic structure fabricated by multijet fusion (MJF) and fused filament fabrication (FFF). The experimental measurements indicate that robust specimens with high‐dimensional accuracy are successfully achieved using MJF process. In the case of the FFF process, the walls–walls and walls–cylinders areas (connecting areas) suffer large pores, indicating poor printing quality. The 3D printed specimens via FFF process reveal smooth plateau stress, while plateau stress with high peaks is observed when the MJF specimens are compressed along the Y‐axis. Moreover, specimens manufactured by the MJF process reveal the highest specific energy absorption (SEA) per unit volume and per unit mass. The calculated values of SEA are 2.1 and 2.5 J g−1 (for specimens fabricated by MJF) in which they significantly outperform the SEA (0.495 and 0.480 J g−1) of those manufactured by the FFF process. Furthermore, the trend of auxetic features (negative Poisson's ratio) has not been affected by the manufacturing processes. This study sheds light on the influence of fabrication methods on the mechanical properties of cellular materials especially their ability to absorb energy.

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“…Recently, for the sake of crashworthiness improvement and design optimization, structural modification of cellular materials is focusing on bio-inspired designs [28,29]. A bio-inspired auxetic metamaterial, namely, butterfly-shaped auxetic metamaterial was proposed [30]. The proposed auxetic metamaterial showed distinguished mechanical properties represented by two distinct plateau regimes and its ability to absorb large amount of energy.…”

Section: Introductionmentioning

confidence: 99%

Compressive properties of a modified re-entrant chiral auxetic structure (MRCA) under uniaxial quasi-static loading

Alomarah,

Hamdoon,

Al-Ibraheemi

et al. 2024

Smart Mater. Struct.

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Auxetics are a unique class of innovative materials/structures. Auxetic material/structures possess a negative value of Poisson’s ratio owing to the distinguished deformation behavior represented by the transvers expansion or contraction when they experience uniaxial stretching or compression, respectively. The aim of this manuscript is to show contributions of the structural modification on an auxetic hybrid structure. The in-plane properties of an auxetic structure, called the modified re-entrant chiral auxetic (MRCA) structure under quasi-static compression were experimentally and numerically explored. The experimental specimens were 3D printed using fused deposition modelling (FDM) technique. The commercial ABAQUS/Explicit solver was used to develop the simulated models. Results showed that the structural modification have led to effectively improve deformation coordination (i.e. uniform deformation patterns) and the compressive properties of the modified structure. Young’s moduli were 1.75 and 12.7 higher than those of the original geometry, while values of plateau stress were 3.1 and 1.23 higher than those of the original geometry when they were compressed along the X and Y axes, respectively. The specific energy absorptions per unit mass (SEA) were 4.7 J/g and 3.9 J/g when the MRCA specimens were compressed along the X and Y axes, respectively. However, the added cylinders limited the auxeticity (i.e. the transvers contraction) of the specimens during the compression tests.

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A bio-inspired auxetic metamaterial with two plateau regimes: Compressive properties and energy absorption

Cited by 33 publications

References 44 publications

4D printing of fiber-reinforced auxetic structures: the building blocks: a review

4D printing of fiber-reinforced auxetic structures: the building blocks: a review

The Effects of Manufacturing Techniques on the Mechanical Performance of an Auxetic Structure Manufactured by Fused Filament Fabrication and Multijet Fusion Processes

Compressive properties of a modified re-entrant chiral auxetic structure (MRCA) under uniaxial quasi-static loading

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