Mechanical metamaterials and beyond

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Sept. 26, 2023

Mechanical metamaterials enable the creation of structural materials with unprecedented mechanical properties. However, thus far, research on has focused passive and tunability their Deep integration multifunctionality, sensing, electrical actuation, information processing, advancing data-driven designs are grand challenges in community that could lead to truly intelligent metamaterials. In this perspective, we provide an overview within beyond classical functionalities. We discuss various aspects approaches for inverse design optimization multifunctional Our aim is new roadmaps discovery next-generation active responsive can interact surrounding environment adapt conditions while inheriting all outstanding features Next, deliberate emerging specific functionalities informative scientific devices. highlight open ahead metamaterial systems at component levels transition into domain application capabilities.

Language: Английский

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4D Printing Auxetic Metamaterials with Tunable, Programmable, and Reconfigurable Mechanical Properties

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(43)

Published: Sept. 9, 2020

Abstract Auxetic mechanical metamaterials, which expand transversally when axially stretched, are widely used in flexible electronics and aerospace. However, these chiral metamaterials suffer from three severe limitations as a typical auxetic metamaterials: narrow strain range, non‐tunable behaviors, fixed properties after fabrication. In this work, 4D printing with tunable, programmable, reconfigurable developed. The deformation mode transforms bending dominated to stretching under large deformation, leading the stress–deformation (σ–λ) behavior of similar those biomaterials (“ J ”‐shaped), such tissues or organs. programmability reconfigurability developed allow change between different high precision. Furthermore, scaffolds personalized well configurations metamaterials‐based light‐emitting diode integrated devices demonstrate potential applications tissue engineering programmable electronics.

Language: Английский

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Tailored Mechanical Metamaterials with Programmable Quasi‐Zero‐Stiffness Features for Full‐Band Vibration Isolation

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(33)

Published: June 13, 2021

Abstract Quasi‐zero‐stiffness (QZS) isolators of high‐static‐low‐dynamic stiffness play an important role in ultra‐low frequency vibration mitigation. While the current designs QZS mainly exploit combination negative‐stiffness corrector and positive‐stiffness element, only have a single working range, here class tailored mechanical metamaterials with programmable features is proposed. These programmed structures contain curved beams geometries that are specifically designed to enable prescribed characteristics. When these compressed, reach range sequence, thus enabling stair‐stepping force‐displacement curves multiple ranges. Compression tests demonstrate vast design space achieved program metamaterials. Further confirm isolation capability proposed The mechanism stems solely from structural geometry therefore materials‐independent. This strategy opens new avenue for innovating compact scalable

Language: Английский

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Recent Progress in Active Mechanical Metamaterials and Construction Principles

Advanced Science, Journal Year: 2021, Volume and Issue: 9(1)

Published: Oct. 29, 2021

Abstract Active mechanical metamaterials (AMMs) (or smart metamaterials) that combine the configurations of and active control stimuli‐responsive materials have been widely investigated in recent decades. The elaborate artificial microstructures stimulus response characteristics both contribute to AMMs, making them achieve excellent properties beyond conventional metamaterials. micro macro structures AMMs are designed based on structural construction principles such as, phase transition, strain mismatch, instability. Considering controllability efficiency materials, physical fields temperature, chemicals, light, electric current, magnetic field, pressure adopted as external stimuli practice. In this paper, frontier works latest progress from aspects mechanics reviewed. functions engineering applications also discussed. Finally, existing issues future perspectives field briefly described. This review is expected provide basis inspiration for follow‐up research AMMs.

Language: Английский

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Advances in mechanics of hierarchical composite materials

Composites Science and Technology, Journal Year: 2021, Volume and Issue: 214, P. 108970 - 108970

Published: Aug. 3, 2021

Language: Английский

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Programmable Multistable Perforated Shellular

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(42)

Published: Aug. 31, 2021

Developing bistable metamaterials has recently offered a new design paradigm for deployable structures and reusable dampers. While most mechanisms possess inclined/curved struts, 3D multistable shellular metamaterial is developed by introducing delicate perforations on the surface of Schwarz's Primitive shellular, integrating unique properties materials such as high area, stiffness, energy absorption with multistability concept. Denoting fundamental snapping part motif, certain motifs elliptical exhibit mechanical bistability. To bring concept to single are multilayer staggered that form hinges facilitate local instability. Adopting an n-layer perforation (n hinges) leads maximum 2n-1 stable states within one motif during loading unloading. Three-directional shellulars attained extending in three orthogonal directions. Harnessing snap-through snap-back behaviors self-contact, introduced perforated strong rigidity both unloading, enhanced dissipation. The strategy opens up horizons creating multidirectional load bearing capabilities applications soft robotics, shape-morphing architectures, absorbers/dampers.

Language: Английский

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In-situ adjustable nonlinear passive stiffness using X-shaped mechanisms

Mechanical Systems and Signal Processing, Journal Year: 2021, Volume and Issue: 170, P. 108267 - 108267

Published: Oct. 9, 2021

Language: Английский

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Hierarchical mechanical metamaterials built with scalable tristable elements for ternary logic operation and amplitude modulation

Science Advances, Journal Year: 2021, Volume and Issue: 7(9)

Published: Feb. 24, 2021

A class of mechanical metamaterials with scalable tristable elements was developed to offer programmable multistability.

Language: Английский

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Inverse design of shell-based mechanical metamaterial with customized loading curves based on machine learning and genetic algorithm

Computer Methods in Applied Mechanics and Engineering, Journal Year: 2022, Volume and Issue: 401, P. 115571 - 115571

Published: Oct. 7, 2022

Language: Английский

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Geometric design, deformation mode, and energy absorption of patterned thin-walled structures

Mechanics of Materials, Journal Year: 2022, Volume and Issue: 168, P. 104269 - 104269

Published: Feb. 23, 2022

Language: Английский

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