Recent Advances of Auxetic Metamaterials in Smart Materials and Structural Systems

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Abstract Auxetic metamaterials refer to materials and structures with extraordinary deformation, i.e., transverse expansion (contraction) under uniaxial tension (compression). In recent decades, a very wide range of innovative functional performance has been discovered stemming from this behavior. This desirable exhibition adaptivity, programmability, functionality provides great potential in soft intelligent systems. However, thus far, the mainstream research on auxetic focused subjective design, monotonic mechanical properties, passive tunability. review thorough overview classical properties applications, primary objective proposing new roadmap auxetics for advances interdisciplinary field. The fundamental works are categorized different configurations mechanisms. particular, integration shape morphing, actuation, sensing, multiphysical response, inverse design is reviewed detail. To accelerate development smart structural systems, applications generalized into robotics (outside body), human–machine interaction (surrounding healthcare devices (inside body). Finally, several significant topics emphasized theory, material choice, manufacturing technique, applications.

Language: Английский

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Enhancing the energy absorption capability of auxetic metamaterials through auxetic cells within re-entrant circular units

Engineering Structures, Journal Year: 2024, Volume and Issue: 315, P. 118379 - 118379

Published: June 19, 2024

Language: Английский

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Advancing auxetic materials: Emerging development and innovative applications

REVIEWS ON ADVANCED MATERIALS SCIENCE, Journal Year: 2024, Volume and Issue: 63(1)

Published: Jan. 1, 2024

Abstract The development of auxetic materials, known for their unique negative Poisson’s ratio, is transforming various industries by introducing new mechanical properties and functionalities. These materials offer groundbreaking applications improved performance in engineering other areas. Initially found natural behaviors have been developed synthetic materials. Auxetic boast properties, including synclastic behavior, variable permeability, indentation resistance, enhanced fracture toughness, superior energy absorption, fatigue properties. This article provides a thorough review classification applications. It emphasizes the importance cellular structure topology enhancing explores configurations, re-entrant honeycombs, chiral models, rotating polygonal units both two-dimensional three-dimensional forms. deformation mechanisms these enable innovative medicine, protective gear, textiles, sensors, actuating devices, more. also addresses challenges research, such as practical implementation durability assessment structures, while showcasing considerable promise significant advancements different disciplines.

Language: Английский

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The Influence of Three-Dimensionally Printed Polymer Materials as Trusses and Shell Structures on the Mechanical Properties and Load-Bearing Capacity of Reinforced Concrete

Materials, Journal Year: 2024, Volume and Issue: 17(14), P. 3413 - 3413

Published: July 10, 2024

Three-dimensional printing technology (3D printing) is becoming a more and popular for aerospace, biology, medicine, mechanics, civil other engineering fields. In engineering, researchers engineers attempt to print construction materials such as concrete using 3D-printing technology. This study aims investigate the reinforcement of beams with 3D printing. To achieve this, fused deposition modeling (FDM) method polylactic acid (PLA) material were selected. Two types geometries chosen find optimal mechanical behavior concrete: high-performance (HPC) reinforced four trusses (Pratt, Howe, Warren, Warren vertical) ultra-high-performance (UHPC) hyperboloid shell structure. The compressive tensile strengths UHPC examined by three-point bending test, HPC was four-point test. results experiments show that structures can absorb energy, although strength reduced. For example, there decrease over 20% in 41% flexural strength, but ductility raised. Adding structure improved deformability UHPC. When Howe added reinforcements, 26% 4.3%, respectively. overall this 3D-printed better than

Language: Английский

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Enhancing the mechanical performance of additively manufactured auxetic structures through design modifications: experimental and numerical analysis

Progress in Additive Manufacturing, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Language: Английский

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Quasi-static compression and impact resistances of novel re-entrant chiral hybrid honeycomb structures

Composite Structures, Journal Year: 2025, Volume and Issue: unknown, P. 119206 - 119206

Published: April 1, 2025

Language: Английский

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Unraveling the reinforcing mechanisms for cementitious composites with 3D printed multidirectional auxetic lattices using X-ray computed tomography

Materials & Design, Journal Year: 2024, Volume and Issue: unknown, P. 113331 - 113331

Published: Sept. 1, 2024

Language: Английский

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Nacre-inspired auxetic interlocking brick-and-mortar composites

Composites Communications, Journal Year: 2024, Volume and Issue: 48, P. 101892 - 101892

Published: March 28, 2024

We design auxetic 3D interlocking brick-and-mortar composites inspired by nacre - a natural strong and resilient high-performance material. The influences of geometrical parameters base material properties on their effective elastic are systematically investigated finite element simulations computational homogenization. numerical results indicate that the exhibit tunable negative Poisson's ratios properly tailoring underlying microstructures. It is revealed behavior therein attributed to relative sliding between adjacent bricks with waviness, i.e., mechanism. These materials, high fracture toughness, well-suited for wide range engineering applications, such as serving robust materials.

Language: Английский

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Experimental study of Double-Elliptic-Ring-based thermomechanical metamaterials’ behaviour

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 281, P. 109552 - 109552

Published: July 14, 2024

In recent years there has been increased interest in 3D thermomechanical metamaterials. The current work reports the design, fabrication and testing of a novel anisotropic anepectic metamaterial obtained by grafting inserts second material into known auxetic structure, Double Elliptic Ring (DER). While auxetics have Negative Poisson's Ratio (NPR), anepectics combine this with negative coefficient thermal expansion (NTE). To avoid unnecessary time expenditure during additive manufacturing (AM) stage, mechanical finite element simulations (FEA) were used as tool to screen multitude possible design variants under consideration, thus aiding rapidly determining more promising geometries. further increase efficiency AM, selected structures then assembled from planar elements, joined together an adhesive. end, through combination two conventional materials – PVA Nylon positive ratio (PR) (CTE) organized DER architecture, it was achieve desired NPR CTE behaviour along some directions, coupled values other directions. Experimental results revealed correlation between PR number cells structure showed that, while are essentially determined metamaterial's geometry, induction NTE subtle interaction geometry properties mismatch constitutive materials.

Language: Английский

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Design and numerical analysis of perforated plate lattice structures

Thin-Walled Structures, Journal Year: 2024, Volume and Issue: 204, P. 112339 - 112339

Published: Aug. 13, 2024

Language: Английский

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