Results 11 to 20 of about 7,008 (229)

A novel tubular structure with negative Poisson's ratio based on gyroid-type triply periodic minimal surfaces

open access: yesVirtual and Physical Prototyping, 2023
A novel type of tubular structure with negative Poisson's ratio based on gyroid-type triply periodic minimal surfaces (TPMSs) is proposed in this study. This work is an attempt to design auxetic tubular structures based on TPMS.
Weiwei Wang   +4 more
doaj   +1 more source

Machine learning accelerated design of auxetic structures

open access: yesMaterials & Design, 2023
Auxetic metamaterials exhibit unusual expansion perpendicular to the direction of tensile loading, a behavior known as negative Poisson's ratio (NPR). The microstructures of auxetic metamaterials require rational design.
Menghuan Wang, Sheng Sun, Tong-Yi Zhang
doaj   +1 more source

Compression Behavior of EBM Printed Auxetic Chiral Structures [PDF]

open access: yesMaterials, 2022
In this study, the cyclic compression and crush behavior of chiral auxetic lattice structures produced from titanium alloy (Ti6Al4V) metallic powder using electron beam melting (EBM) additive manufacturing technology is investigated numerically and experimentally.
Kadir Gunaydin   +5 more
openaire   +4 more sources

Auxetic structures from 3D printed hybrid textiles

open access: yesCommunications in Development and Assembling of Textile Products, 2021
Auxetic structures have been produced using 3D printing and knitted textile materials. A review of other auxetic textiles is presented along with the new materials.
Subin Shajoo   +2 more
doaj   +1 more source

DNA Nanostar Structures with Tunable Auxetic Properties

open access: yesMolecular Systems Design & Engineering, 2023
ABSTRACTAuxetic structures are unique with a negative Poisson’s ratio. Unlike regular materials, they response to external loading with simultaneous expansion or compression in all directions, rendering powerful properties advantageous in diverse applications from manufacturing to space engineering.
Yancheng Du   +4 more
openaire   +1 more source

A novel auxetic structure based bone screw design: Tensile mechanical characterization and pullout fixation strength evaluation

open access: yesMaterials & Design, 2020
It was supposed that auxetic structure with negative Poisson's ratio (NPR) expands under stretch and could enhance the screw-bone fixation. In this study, the novel auxetic structure based bone screws were designed, and mechanical properties and fixation
Yan Yao   +5 more
doaj   +1 more source

Theory of strains in auxetic materials [PDF]

open access: yes, 2012
Auxetic materials, or negative-Poisson's-ratio materials, are important technologically and fascinating theoretically. When loaded by external stresses, their internal strains are governed by correlated motion of internal structural degrees of freedom ...
Blumenfeld, Raphael, Edwards, Sam F.
core   +1 more source

An Experimental Study of Auxetic Tubular Structures

open access: yesMaterials, 2022
Auxetic tubular structures are widely known structures, characterized by a negative Poisson’s ratio upon stretching and deformation in the axial and transverse directions, which have numerous application possibilities. In this paper, tubular structures were realized by rolling up planar auxetic structures and using rigid square frames as unit cells ...
Julian Plewa   +2 more
openaire   +2 more sources

Optimizing the Auxetic Geometry Parameters in Few Yarns Based Auxetic Woven Fabrics for Enhanced Mechanical Properties Using Grey Relational Analysis

open access: yesJournal of Natural Fibers, 2022
2D woven auxetic fabrics (AF) developed by weave design modification provide a continuous, commercial, and low-cost manufacturing process for high strength and stable auxetic structures.
Muhammad Zeeshan   +6 more
doaj   +1 more source

Geometric auxetics [PDF]

open access: yes, 2015
We formulate a mathematical theory of auxetic behavior based on one-parameter deformations of periodic frameworks. Our approach is purely geometric, relies on the evolution of the periodicity lattice and works in any dimension.
Borcea, Ciprian S., Streinu, Ileana
core   +4 more sources

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