BROWSE

Related Researcher

Author's Photo

Kwon, Soon-Yong
Frontier, Innovative Nanomaterials & Devices (FIND) Lab
Research Interests
  • Semiconductor Epitaxy, thin film technology & surface/ interface Science

ITEM VIEW & DOWNLOAD

Auxeticity in Metals and Periodic Metallic Porous Structures Induced by Elastic Instabilities

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Auxeticity in Metals and Periodic Metallic Porous Structures Induced by Elastic Instabilities
Author
Ho, Duc TamNguyen, Cao ThangKwon, Soon-YongKim, Sung Youb
Issue Date
2019-01
Publisher
WILEY-V C H VERLAG GMBH
Citation
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, v.256, no.1, pp.1800122
Abstract
Materials with a negative Poisson's ratio (auxetics) are counter intuitive because their mechanical response is unusual. On the other hand, instabilities are usually regarded as deleterious phenomena and thus their prevention is needed. Here, numerical and theoretical evidences have been provided to show that two different elastic instabilities are, rather than deleterious, useful phenomena that cause auxeticity. It has been shown that a negative Poisson's ratio can be found in some face-centered cubic (FCC) single crystals at a finite strain as they are under uniaxial stress along the [100]-direction. The auxeticity is associated with a phase transformation induced by the Born-Hill's elastic instability, i.e., an elastic material instability. In addition, it has been found that periodic metallic porous structures can also show a negative Poisson's ratio at finite compressive strain. In this case, buckling of the micro-structure of the porous structures, which is an elastic and geometric instability, is respondent for the auxeticity.
URI
https://scholarworks.unist.ac.kr/handle/201301/25837
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/pssb.201800122
DOI
10.1002/pssb.201800122
ISSN
0370-1972
Appears in Collections:
MNE_Journal Papers
MSE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU