Mechanical Metamaterials and Their Engineering Applications

Advanced Engineering Materials, Journal Year: 2019, Volume and Issue: 21(3)

Published: Jan. 4, 2019

In the past decade, mechanical metamaterials have garnered increasing attention owing to its novel design principles which combine concept of hierarchical architecture with material size effects at micro/nanoscale. This strategy is demonstrated exhibit superior performance that allows us colonize unexplored regions in property space, including ultrahigh strength‐to‐density ratios, extraordinary resilience, and energy absorption capabilities brittle constituents. recent years, unprecedented behaviors such as negative Poisson's ratio, twisting under uniaxial forces, thermal expansion are also realized. paves a new pathway for wide variety multifunctional applications, example, storage, biomedical, acoustics, photonics, management. Herein, fundamental scientific theories behind this class metamaterials, along their fabrication techniques potential engineering applications beyond mechanics reviewed. Explored examples include progresses both functional applications. Finally, current challenges future developments emerging field discussed well.

Language: Английский

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Mechanical design and multifunctional applications of chiral mechanical metamaterials: A review

Materials & Design, Journal Year: 2019, Volume and Issue: 180, P. 107950 - 107950

Published: June 17, 2019

Rational design of artificial micro-structured metamaterials with advanced mechanical and physical properties that are not accessible in nature materials is challenging important. In our paper, designs 2D 3D chiral reviewed, their behaviors deformation mechanisms can be investigated through equilibrium principle, strain energy analysis, micropolar elasticity homogenization theories. Afterwards, multifunctional elaborated, such as: vibration attenuation, impact absorption negative coefficient thermal expansion (CTE). Finally, several successful industrial applications demonstrated, morphing airfoil smart deployable antenna reconfigurable structures, auxetic stent, flexible electronics phase transforming metastructures, etc. perspectives challenges on discussed.

Language: Английский

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Electromagnetic absorption materials: Current progress and new frontiers

Progress in Materials Science, Journal Year: 2022, Volume and Issue: 127, P. 100946 - 100946

Published: March 17, 2022

Language: Английский

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Large deformation and energy absorption of additively manufactured auxetic materials and structures: A review

Composites Part B Engineering, Journal Year: 2020, Volume and Issue: 201, P. 108340 - 108340

Published: Aug. 27, 2020

Language: Английский

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Broadband multispectral compatible absorbers for radar, infrared and visible stealth application

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 135, P. 101088 - 101088

Published: Feb. 4, 2023

Language: Английский

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Hypocrystalline ceramic aerogels for thermal insulation at extreme conditions

Nature, Journal Year: 2022, Volume and Issue: 606(7916), P. 909 - 916

Published: June 29, 2022

Abstract Thermal insulation under extreme conditions requires materials that can withstand complex thermomechanical stress and retain excellent thermal properties at temperatures exceeding 1,000 degrees Celsius 1–3 . Ceramic aerogels are attractive insulating materials; however, very high temperatures, they often show considerably increased conductivity limited stability lead to catastrophic failure 4–6 Here we report a multiscale design of hypocrystalline zircon nanofibrous with zig-zag architecture leads exceptional ultralow temperatures. The near-zero Poisson’s ratio (3.3 × 10 −4 ) expansion coefficient (1.2 −7 per degree Celsius), which ensures structural flexibility properties. They strength degradation (less than 1 cent) after sharp shocks, working temperature (up 1,300 Celsius). By deliberately entrapping residue carbon species in the constituent fibres, substantially reduce radiation heat transfer achieve one lowest high-temperature conductivities among ceramic so far—104 milliwatts metre kelvin Celsius. combined offer an material system for robust conditions.

Language: Английский

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Deep learning for topology optimization of 2D metamaterials

Materials & Design, Journal Year: 2020, Volume and Issue: 196, P. 109098 - 109098

Published: Sept. 4, 2020

Data-driven models are rising as an auspicious method for the geometrical design of materials and structural systems. Nevertheless, existing data-driven customarily address optimization designs rather than metamaterial designs. Metamaterials emerging promising exhibiting tailorable unprecedented properties a wide spectrum applications. In this paper, we develop deep learning (DL) model based on convolutional neural network (CNN) that predicts optimal The developed DL non-iteratively optimizes metamaterials either maximizing bulk modulus, shear or minimizing Poisson's ratio (including negative values). data generated by solving large set inverse homogenization boundary values problems, with randomly features from specific distribution. Such s can play vital role in accelerating more computationally expensive such multiscale

Language: Английский

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Vibration control based metamaterials and origami structures: A state-of-the-art review

Mechanical Systems and Signal Processing, Journal Year: 2021, Volume and Issue: 161, P. 107945 - 107945

Published: April 29, 2021

Language: Английский

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Engineering Origami: A Comprehensive Review of Recent Applications, Design Methods, and Tools

Advanced Science, Journal Year: 2021, Volume and Issue: 8(13)

Published: May 13, 2021

Abstract Origami‐based designs refer to the application of ancient art origami solve engineering problems different nature. Despite being implemented at dimensions that range from nano meter scale, origami‐based are always defined by laws govern their geometrical properties any scale. It is thus not surprising notice study applications has become cross‐disciplinary interest. This article aims review recent in engineering, design methods and tools, with a focus on research outcomes 2015 2020. First, an introduction history, mathematical background terminology given. reviewed largely following fields: biomedical architecture, robotics, space structures, biomimetic fold‐cores, metamaterials. Second, methods, related manufacturing constraints discussed. Finally, concludes open questions future challenges.

Language: Английский

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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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