Results 191 to 200 of about 5,526 (237)

Cementitious cellular composites with auxetic behavior

Cement and Concrete Composites, 2020
Auxetic behavior refers to material with negative Poisson's ratio. In this research, a new type of cementitious auxetic material is developed. A novel crack bridging auxetic mechanism is discovered which is in contrast with a local buckling mechanism ...
Yading Xu, Hongzhi Zhang, Erik Schlangen   +2 more
exaly   +2 more sources

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Auxetic Plates on Auxetic Foundation

Advanced Materials Research, 2014
Auxetic solids are materials that exhibit negative Poisson’s ratio. This paper evaluates the maximum stresses in point-loaded (a) auxetic plates on conventional elastic foundation, (b) conventional plates on auxetic elastic foundation, and (c) auxetic plates on auxetic elastic foundation vis-à-vis conventional plates on conventional elastic foundation.
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Auxetic Composites with Mixed Auxeticity

2020
This chapter considers composites containing phases with opposing Poisson’s ratio signs. Special emphasis is placed on the overall sign of the composite, which differs depending on the mode of loading.
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Mixed auxeticity of auxetic sandwich structures

physica status solidi (b), 2012
AbstractPreviously, a sandwich structure in which the Poisson ratios of the core and facesheets possess opposite signs has been shown to exhibit overall conventional and auxetic behavior depending on the loading mode – axial loading or bending – for an intermediate range of relative core thickness.
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Stoneley waves in auxetics and non-auxetics: Wiechert case

Mechanics of Advanced Materials and Structures, 2020
An interesting phenomenon observed in auxetics (materials with negative Poisson’s ratio) relates to appearing anomalous velocity intersections of the interfacial Stoneley waves at varying acoustic ...
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Bistable auxetic surface structures

ACM Transactions on Graphics, 2021
We present Bistable Auxetic Surface Structures , a novel deployable material system based on optimized bistable auxetic cells. Such a structure can be flat-fabricated from elastic sheet material, then deployed towards a desired double-curved target shape by activating the bistable mechanism of its component cells. A
Tian Chen, Julian Panetta, Max Schnaubelt, Mark Pauly   +3 more
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Modeling deformation of auxetic and non-auxetic polymer gels

Applied Mathematical Modelling, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
A.R. El Dhaba, M. Shaat
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Auxetics Abounding

2018 International Conference on Reconfigurable Mechanisms and Robots (ReMAR), 2018
Auxetic behavior refers to lateral widening upon stretching. Although a structural origin for this rather counterintuitive type of deformation was often suggested, a theoretical understanding of the role of geometry in auxetic behavior has been a challenge for a long time.
Borcea, Ciprian S., Streinu, Ileana
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Semi-auxetic Laminates and Auxetic Composites

2014
This chapter begins by establishing the effect of constituents with opposite Poisson’s ratio signs on the effective moduli of composite properties. Results show that the effective Young’s modulus of continuous unidirectional fiber composites in the fiber direction and that for laminates of isotropic laminas in the in-plane direction exceeds the rule of
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Electric Auxetic Effect in Piezoelectrics

Physical Review Letters, 2020
Auxetic materials are characterized by a negative Poisson's ratio that they expand laterally in the directions perpendicular to the applied stretching stress and vice versa. Piezoelectrics will change their dimensions when exposed to an external electric field.
Jian Liu, Shi Liu, Jia-Yue Yang, Linhua Liu   +3 more
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