Results 71 to 80 of about 3,525,011 (226)
The structure design and application of metamaterials with negative Poisson's ratio
EPJ Applied MetamaterialsMetamaterials with negative Poisson's ratio, also called auxetic metamaterials, are artificially engineered structures or materials that possess extraordinary auxetic effect, high shear modulus, excellent impact resistance, and remarkable energy ...
Han Xu +6 more
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Dynamic performance of auxetic structures: experiments and simulation
Smart Materials and Structures, 2020 Abstract In this study, the in-plane mechanical properties of auxetic structures subjected to dynamic compression have been investigated experimentally and numerically. The studied auxetic structures, which have negative Poisson’s ratios, include a recently developed auxetic structure named re-entrant chiral ...
Alomarah, Amer +3 more
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Bistable Networks Enable Complex Shape Changes
Advanced Science, EarlyView.Transition‐controlled metamaterials are networks of bistable mechanical memory that store local binary states and express them as global shape change. By decoupling low‐force programming from high‐force holding, a single lattice is reconfigured into distinct 2D profiles and 3D surfaces without continuous actuation, enabling reusable morphing materials ...
Sawyer Thomas, Jeffrey Lipton
wiley +1 more source
Monitoring Auxetic Structure with FBG Sensor
e-Journal of Nondestructive TestingAuxetic materials are a particular class of materials which present a negative Poisson ratio (NPR). This means that once they are stretched, they expand in the directions orthogonal to the applied load. The dual behaviour occurs during compression tests.
Moroni, Riccardo Carlo +2 more
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Comparative Framework for Energy Absorption Capacity of Auxetics and Open‐Cell Foams
Macromolecular Materials and EngineeringThe selection of the appropriate materials and structures for enhanced energy absorption is paramount in the design of protective gear, regardless of the final application.
George Youssef, Celia Rufo‐Martín
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TextilesThis study aimed to examine the effect of the orientation angle of center facing arms on the elongation and strength of 3D-printed textiles with two different re-entrant cellular auxetic structures.
Shahbaj Kabir, Yu Li, Young-A Lee
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Explaining the Origin of Negative Poisson's Ratio in Amorphous Networks With Machine Learning
Advanced Intelligent Discovery, EarlyView.This review summarizes how machine learning (ML) breaks the “vicious cycle” in designing auxetic amorphous networks. By transitioning from traditional “black‐box” optimization to an interpretable “AI‐Physics” closed‐loop paradigm, ML is shown to not only discover highly optimized structures—such as all‐convex polygon networks—but also unveil hidden ...
Shengyu Lu, Xiangying Shen
wiley +1 more source
State-of-the-art in 3D printing of auxetic structures: recent progress and perspectives
Journal of Materials Science: Materials in EngineeringAuxetic structures, which are identified by their negative Poisson’s ratio, have exceptional mechanical qualities, such as increased flexibility, impact resistance, and greater energy absorption.
Santosh S Bagewadi +3 more
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Random auxetics from buckling fibre networks
Nature Communications, 2019 Auxetic materials have usually been developed with periodically arrange structures. Here, the authors electrospin fibre networks, and show both theoretically and experimentally that these random structures have pronounced auxetic behaviour with negative ...
S. Domaschke +3 more
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, 2021 This paper developed a thermal–mechanical analysis model to describe the thermal shock behavior of ceramic sandwich structures (CSSs) with an auxetic honeycomb core.
Wang, Baolin (R17839), Hu, J. S.
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