Results 31 to 40 of about 10,466 (212)

Computational modelling of structural integrity following mass loss in polymeric charred cellular solids [PDF]

open access: yes, 2014
A novel computational technique is presented for embedding mass-loss due to burning into the ANSYS finite element modelling code. The approaches employ a range of computational modelling methods in order to provide more complete theoretical treatment of ...
Francis, Jonathan   +3 more
core   +2 more sources

Auxetic strains—insight from iso-auxetic materials [PDF]

open access: yesMolecular Simulation, 2005
Auxeticity is the result of internal structural degrees of freedom that get in the way of affine deformations. This paper proposes a new understanding of strains in disordered auxetic materials. A class of iso-auxetic structures is identified, which are auxetic structures that are also isostatic, and these are distinguished from conventional elasto ...
openaire   +1 more source

Deformation of Gels with Spherical Auxetic Inclusions

open access: yesGels, 2022
Auxetic metamaterials possess unnatural properties, such as a negative Poisson’s ratio, which offers interesting features when combined with traditional materials.
Jan Zidek, Petr Polacek, Josef Jancar
doaj   +1 more source

Tunable Digital Material Properties of 3D Voxel Printers [PDF]

open access: yes, 2008
Digital materials are composed of many discrete voxels placed in a massively parallel layer deposition process, as opposed to continuous (analog) deposition techniques.
Hiller, Jonathan, Lipson, Hod
core   +1 more source

Hierarchical honeycomb auxetic metamaterials [PDF]

open access: yesScientific Reports, 2015
AbstractMost conventional materials expand in transverse directions when they are compressed uniaxially resulting in the familiar positive Poisson’s ratio. Here we develop a new class of two dimensional (2D) metamaterials with negative Poisson’s ratio that contract in transverse directions under uniaxial compressive loads leading to auxeticity. This is
Mousanezhad, Davood   +6 more
openaire   +4 more sources

Nanocomposites with auxetic nanotubes [PDF]

open access: yesInternational Journal of Smart and Nano Materials, 2010
The effect of extreme and negative Poisson's ratio (auxetic) behavior from non-reconstructed defective (NRD) carbon nanotubes on the mechanical properties of nanocomposites is demonstrated. NRD carbon nanotubes (CNTs) produced by electronic or ion irradiation are metastable structures, which however can exist at low temperatures or when surrounded by ...
Scarpa, FL, Adhikari, S, C Y, Wang
openaire   +3 more sources

Fixed-Connectivity Membranes [PDF]

open access: yes, 2004
The statistical mechanics of flexible surfaces with internal elasticity and shape fluctuations is summarized. Phantom and self-avoiding isotropic and anisotropic membranes are discussed, with emphasis on the universal negative Poisson ratio common to the
Bowick, Mark J.
core   +3 more sources

Auxetic piezoelectric energy harvesters for increased electric power output

open access: yesAIP Advances, 2017
This letter presents a piezoelectric bimorph with auxetic (negative Poisson’s ratio) behaviors for increased power output in vibration energy harvesting.
Qiang Li, Yang Kuang, Meiling Zhu
doaj   +1 more source

The Application of Auxetic Material for Protective Sports Apparel

open access: yesProceedings, 2018
Current research of auxetic materials highlights its potential as personal protective equipment for sports apparel with enhanced properties such as conformability, superior energy absorption and reduced thickness.
Charlotte Moroney   +4 more
doaj   +1 more source

Auxetic mechanical metamaterials: from soft to stiff

open access: yesInternational Journal of Extreme Manufacturing, 2023
Auxetic mechanical metamaterials are artificially architected materials that possess negative Poisson’s ratio, demonstrating transversal contracting deformation under external vertical compression loading.
Xiang Li   +4 more
doaj   +1 more source

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