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Auxetic materials: the positive side of being negative
Kenneth E. Evans,Kim L. Alderson +1 more
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In this paper, a review of examples of auxetic materials, the effect the negative Poisson's ratio has on their mechanical properties and how these fascinating new materials can be used in applications as diverse as smart fasteners, replacement blood vessels and curved car door panels.Abstract:
An auxetic material is one which gets fatter when it is stretched. Thus, unlike most materials, it has a negative Poisson's ratio. This review looks at examples of auxetic materials, the effect the negative Poisson's ratio has on their mechanical properties and how these fascinating new materials can be used in applications as diverse as smart fasteners, replacement blood vessels and curved car door panels. It also considers the benefits of introducing such novel effects in undergraduate teaching.read more
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Journal ArticleDOI
Seeing auxetic materials from the mechanics point of view: A structural review on the negative Poisson’s ratio
TL;DR: In this paper, the authors summarized research work related to materials with zero, or negative Poisson's ratio, referred to as auxetic materials, and predicted that future research will be in the direction of disordered microstructures utilizing the homogenization method.
Journal ArticleDOI
Bending behavior of sandwich composite structures with tunable 3D-printed core materials
Tiantian Li,Lifeng Wang +1 more
TL;DR: In this paper, the authors combine 3D printing technique, numerical analysis, and experiments to design a new class of sandwich composites that exhibit various bending behaviors, including truss, conventional honeycomb, and re-entrant honeycomb topologies.
Journal ArticleDOI
Design and modeling of auxetic and hybrid honeycomb structures for in-plane property enhancement
TL;DR: In this article, a comparative study of in-plane uniaxial compression loading behavior of regular honeycomb, reentrant auxetic honeycomb and locally reinforced auxetic-strut structure was conducted on 3D printed samples.
Journal ArticleDOI
Elastic properties of chiral, anti-chiral, and hierarchical honeycombs: A simple energy-based approach
Davood Mousanezhad,Babak Haghpanah,Ranajay Ghosh,Abdel Magid Hamouda,Hamid Nayeb-Hashemi,Ashkan Vaziri +5 more
TL;DR: In this paper, the effects of chirality and self-similar hierarchy on the elastic response of two-dimensional honeycombs were studied systematically, and simple closed-form expressions were derived for the elastic moduli of several chiral, anti-chiral, and hierarchical honeycomb with hexagon and square based networks.
Journal ArticleDOI
Morphing aircraft based on smart materials and structures: A state-of-the-art review:
TL;DR: In this paper, the wings of a bird can be reshaped to provide optimal performance at all flight conditions, not only for one or two flight conditions and not for the entire flight envelope.
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