Stair‐Stepping Mechanical Metamaterials with Programmable Load Plateaus

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 17, 2024

Abstract Materials with target load plateaus offer the potential for developing innovative vibration suppression and isolation systems applications such as satellite platforms, submarines, electric vehicles. However, implementing these materials can pose significant challenges. In this study, stair‐stepping mechanical metamaterials programmable are presented, which created via a three‐level (unit, module, 3D object) construction strategy. The strategy inspired by inverse design concept achieves tunability in number properties of within force–displacement profiles metamaterials. This approach even yields appealing response patterns, validated experiments finite element simulations. Promisingly, programming unit from its initial configuration to “zero stiffness” enables excellent performance. Furthermore, two reversible methods proposed switching among various configurations, namely shape memory supporting payload. opens up new possibilities creating customized responses. It also provides opportunities incorporate multimodal capabilities into precision devices.

Language: Английский

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Multi‐Physical Lattice Metamaterials Enabled by Additive Manufacturing: Design Principles, Interaction Mechanisms, and Multifunctional Applications

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract Lattice metamaterials emerge as advanced architected materials with superior physical properties and significant potential for lightweight applications. Recent developments in additive manufacturing (AM) techniques facilitate the of lattice intricate microarchitectures promote their applications multi‐physical scenarios. Previous reviews on have largely focused a specific/single field, limited discussion properties, interaction mechanisms, multifunctional Accordingly, this article critically design principles, structure‐mechanism‐property relationships, enabled by AM techniques. First, are categorized into homogeneous lattices, inhomogeneous other forms, whose principles processes discussed, including benefits drawbacks different fabricating types lattices. Subsequently, structure–mechanism–property relationships mechanisms range fields, mechanical, acoustic, electromagnetic/optical, thermal disciplines, summarized to reveal critical principles. Moreover, metamaterials, such sound absorbers, insulators, manipulators, sensors, actuators, soft robots, management, invisible cloaks, biomedical implants, enumerated. These provide effective guidelines

Language: Английский

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Artificial Intelligence-Guided Inverse Design of Deployable Thermo-Metamaterial Implants

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Current limitations in implant design often lead to trade-offs between minimally invasive surgery and achieving the desired post-implantation functionality. Here, we present an artificial intelligence inverse paradigm for creating deployable implants as planar tubular thermal mechanical metamaterials (thermo-metamaterials). These thermo-metamaterial exhibit tunable properties volume change response temperature changes, enabling personalized surgery. We begin by generating a large database of corrugated thermo-metamaterials with various cell structures bending stiffnesses. An model is subsequently developed integrating evolutionary algorithm neural network. This allows automatic determination optimal microstructure performance,i.e., target stiffness. validate this approach designing patient-specific spinal fusion tracheal stents. The results demonstrate that can achieve over 200% increase or cross-sectional area their fully deployed states. Finally, propose broader vision clinically informed process prioritizes biocompatibility, feasibility, precision simultaneously development high-performing viable implants. feasibility proposed demonstrated using fuzzy analytic hierarchy customize based on relevant factors.

Language: Английский

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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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Excellent mechanical properties of a novel double-diagonal reinforced mechanical metamaterial with tunable Poisson’s ratios inspired by deep-sea glass sponges

Materials & Design, Journal Year: 2025, Volume and Issue: unknown, P. 113628 - 113628

Published: Jan. 1, 2025

Language: Английский

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Temperature‐Driven Topological Transformations in Prestressed Cellular Metamaterials

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

Published: Jan. 26, 2025

Abstract Stimuli‐responsive materials are able to alter their physicochemical properties, e.g., shape, color, or stiffness, upon exposure an external trigger, heat, light, humidity, exhibiting environmental adaptability. Their capacity undergo shape reconfiguration, pattern transformation, and property modulation enables multifunctionality. In this work, two strategies harnessed, i.e., prestressed assembly temperature‐dependent stiffness reversal, introduce a class of temperature‐responsive metamaterials capable undergoing topological transformations, endowing them with smart functionality. Through combination mechanics theory, numerical simulations, thermomechanical experiments, the physical mechanisms underlying temperature‐triggered transformations leading switches first elucidated, then insights leveraged demonstrate tunable bandgaps robotic capturers. These findings reveal attainment giant negative positive values coefficient thermal expansion, accompanied by isotropic expansion shrinkage under actuation within fairly rapid timeframe, below 6 s. The strategy here presented is versatile as it relies on pair off‐the‐shelf 3D printable materials, can be up‐ down‐scaled, also realized through other stimuli, light moisture, paving way for use in multifunctional applications, including stimulus‐triggered morphing devices, autonomous sensors actuators, reconfigurable soft robots.

Language: Английский

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Design strategy of curved-beam based metamaterial with unprecedented lateral deformation mode transition

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110136 - 110136

Published: March 1, 2025

Language: Английский

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Spatial tuning of the positive and negative Poisson's ratio of metamaterials through gradient design

Thin-Walled Structures, Journal Year: 2024, Volume and Issue: 205, P. 112382 - 112382

Published: Aug. 25, 2024

Language: Английский

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Temperature-Responsive Multistable Kirigami with Reprogrammable Multi-Shape Memory

Published: Jan. 1, 2025

Shape memory materials retain temporary shapes without external constraints and return to their permanent shape when exposed an trigger, e.g., light, humidity, or heat. Current can maintain a modest number of shapes, deliver limited modes deformation with undesired spring-back, typically require tuning glass transition temperatures through alteration in chemical composition. In this work, we demonstrate the attainment robust simplified multi-shape effect class 3D-printed kirigami that merely relies on two off-the-shelf polymers distinct temperature-dependent elastic modulus. By programming multistability low-temperature regime, our metamaterials be reconfigured in-situ geometrical rich diverse set stable planar spatial tessellations before reverting heat-induced stiffness reversal. Through mechanics theory, numerical simulations, thermomechanical experiments, first investigate physical mechanism marks stability transitions modes, then leverage insights multifunctionality range applications, including temperature sensors, actuators, robotic grippers. Unreliant chemistry material composition, hallmarks include delivery multiple combination thereof, no reprogrammable changes, switch, swift recovery. Our strategy is versatile, adapted other 3D printable stimuli, light moisture, up- down-scaled, paving way for wide multifunctional adaptive morphing devices, self-powered sensors reconfigurable soft robots.

Language: Английский

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A Review on Porous Structure Negative Poisson's Ratio Metamaterials

Journal of Engineering Research and Reports, Journal Year: 2025, Volume and Issue: 27(1), P. 189 - 204

Published: Jan. 15, 2025

Metamaterials with a porous structure possess number of advantageous properties, including low mass, high specific strength, and energy absorption rate. When subjected to impact or compression, these materials exhibit excellent mechanical which has led their use in variety aerospace applications recent years. In comparison traditional materials, metamaterials physical properties that lack. This distinguishes them from provides new ideas for solving engineering problems. Starting this deformation mechanism concave contraction such structures, paper details the modeling several types negative Poisson's ratio superstructures, as honeycomb, foam tubular focuses on structures terms elasticity, resistance, when external forces. The commences an exposition effect structure, accompanied by discourse extant research status prevalent superstructures. Thereafter, under compressive load is examined. conditions introduced, finally, practical application fields automobile industry, shipbuilding other are summarized, future reviewed based existing results. Finally, industry development trend prospects prospected

Language: Английский

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