Recent Advances in 4D‐Printed Shape Memory Actuators

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Abstract 4D printing, which combines the design freedom of 3D printing with responsiveness smart materials, is revolutionizing creation active structures. These structures can change shape in response to external stimuli, paving way for advancements robotics, biomedicine, and beyond. However, a comprehensive review article highlighting recent printed memory actuators (SMAAs) lacking. This explores exciting potential intelligent SMAAs. It examines concept materials used, like shape‐memory polymers (SMPs), alloys (SMAs), polymer composites (SMPCs). then dives into compatible techniques principles achieving programmed changes. Different categories SMAAs are explored, showcasing their applications diverse fields. The concludes by discussing challenges future directions, emphasizing massive creating next generation actuators, making it valuable resource researchers field.

Language: Английский

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Design of broad quasi-zero stiffness platform metamaterials for vibration isolation

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 281, P. 109691 - 109691

Published: Aug. 29, 2024

Language: Английский

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3D printing of active mechanical metamaterials: A critical review

Materials & Design, Journal Year: 2024, Volume and Issue: unknown, P. 113305 - 113305

Published: Sept. 1, 2024

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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Programmable materials: Current trends, challenges, and perspectives

Applied Materials Today, Journal Year: 2024, Volume and Issue: 40, P. 102372 - 102372

Published: Aug. 10, 2024

Research into programmable materials has attracted extraordinary interest since the nineties, when term "programmable" was introduced for first time. In its widest definition, is used to denote that are designed be highly dynamic, either in shape and/or physical/functional properties, on-demand and a precise, sequential predetermined way. Such unique feature allows them adapt various needs offers new opportunities several application fields, enabling overcome limitations of traditional materials. The present paper aims introduce readers world materials, enhance their interest, knowledge, skills field, provide useful insights ideas on how approach development implementation. Accordingly, this an overview discussion current state-of-the-art recent progress up future perspectives. First, historical evolution definition these as well types properties achievable presented. Then, different programming strategies could tune material covered, with emphasis constituent applied stimuli, geometrical arrangements. Finally, real-world applications, ongoing challenges, directions exciting class discussed.

Language: Английский

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Enhanced low-frequency band gap of nonlinear quasi-zero-stiffness metamaterial by lowering stiffness coupling

Nonlinear Dynamics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 12, 2024

Language: Английский

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3D auxetic metamaterials with tunable multistable mechanical properties

Mechanics of Materials, Journal Year: 2024, Volume and Issue: 201, P. 105217 - 105217

Published: Dec. 9, 2024

Language: Английский

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Influence of Geometrical Features on the Cyclic Behavior of S-Shaped Steel Dampers Used in Sustainable Seismic Isolation: Experimental Insight with Numerical Validation

Sustainability, Journal Year: 2025, Volume and Issue: 17(2), P. 660 - 660

Published: Jan. 16, 2025

Seismic isolation systems play a crucial role in enhancing structural resilience during earthquakes, with lead rubber bearings being widely adopted solution. These incorporate cores to effectively dissipate seismic energy. However, their widespread application is constrained by significant drawbacks, including high costs and environmental concerns associated lead. This study introduces novel sustainable S-shaped steel damper made from standard steel. The influence of key geometrical parameters—thickness, width, the distance bolt hole arc’s start—on cyclic behavior dampers was investigated. Seven prototypes were designed, manufactured, experimentally tested evaluate horizontal stiffness damping performance. Subsequentially, experimental results considered for validation numerical model based on full 3D Finite Element discretization. model, calibrated using simple uniaxial material tests, facilitates identification optimal geometric features production without need extensive prototype fabrication testing. Additionally, can be seamlessly integrated into future analyses, enabling comprehensive evaluation performance characteristics. In conclusion, this research provides critical insights optimization as cost-effective dissipation devices. It offers both data robust guide designs improved mitigation performances.

Language: Английский

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Advances in Shape‐Memory Polymers and Composites for Biomedical Device Applications

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

Published: Jan. 29, 2025

Over the past two decades, remarkable advancements have been achieved in stimulus‐responsive shape‐memory polymers (SMPs), which exhibit desirable properties such as characteristics, deformability, and biocompatibility, while responding to external stimuli. The development of polymer composites (SMPCs) leads high recovery forces novel functionalities, including electrical actuation, magnetic biocompatibility. enhanced remotely controllable functionality further expand application SMPs biomedical areas, surgical applications for replacing handheld instruments drug delivery systems. In this review, device SMPCs are focused on their recent bone tissue scaffolds, lumen stents, carriers examined. Furthermore, bottlenecks challenges encountered by devices elucidated. future trend is also discussed, aiming provide valuable insights broadening fields.

Language: Английский

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A compact vibration isolator based on a structural-functional integrated lattice

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: 210, P. 113001 - 113001

Published: Jan. 30, 2025

Language: Английский

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