Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials

Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials

We theoretically investigated the variable mechanical properties such as Young’s modulus, Poisson’s ratios and compressibility in super-hard materials. Our tensorial analysis reveals that the mechanical properties of super-hard materials are strongly sensitive to the anisotropy index of...

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Bibliographic Details
Main Authors: Chuanwei Huang, Rongpeng Li, Lang Chen
Format: Article
Language:English
Published: AIP Publishing LLC 2014-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4904100
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spelling doaj-46cb018fbd514f16b93c31dd891944752020-11-25T01:45:02ZengAIP Publishing LLCAIP Advances2158-32262014-12-01412127116127116-710.1063/1.4904100020412ADVAnisotropic elasticity and abnormal Poisson’s ratios in super-hard materialsChuanwei Huang0Rongpeng Li1Lang Chen2Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong, 518055, People’s Republic of ChinaDepartment of Physics, South University of Science and Technology of China, Shenzhen, Guangdong, 518055, People’s Republic of ChinaDepartment of Physics, South University of Science and Technology of China, Shenzhen, Guangdong, 518055, People’s Republic of China We theoretically investigated the variable mechanical properties such as Young’s modulus, Poisson’s ratios and compressibility in super-hard materials. Our tensorial analysis reveals that the mechanical properties of super-hard materials are strongly sensitive to the anisotropy index of materials. In sharp contrast to the traditional positive constant as thought before, the Poisson’s ratio of super-hard materials could be unexpectedly negative, zero, or even positive with a value much larger than the isotropic upper limit of 0.5 along definite directions. Our results uncover a correlation between compressibility and hardness, which offer insights on the prediction of new super-hard materials. http://dx.doi.org/10.1063/1.4904100
collection DOAJ
language English
format Article
sources DOAJ
author Chuanwei Huang
Rongpeng Li
Lang Chen
spellingShingle Chuanwei Huang
Rongpeng Li
Lang Chen
Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
AIP Advances
author_facet Chuanwei Huang
Rongpeng Li
Lang Chen
author_sort Chuanwei Huang
title Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
title_short Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
title_full Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
title_fullStr Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
title_full_unstemmed Anisotropic elasticity and abnormal Poisson’s ratios in super-hard materials
title_sort anisotropic elasticity and abnormal poisson’s ratios in super-hard materials
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2014-12-01
description We theoretically investigated the variable mechanical properties such as Young’s modulus, Poisson’s ratios and compressibility in super-hard materials. Our tensorial analysis reveals that the mechanical properties of super-hard materials are strongly sensitive to the anisotropy index of materials. In sharp contrast to the traditional positive constant as thought before, the Poisson’s ratio of super-hard materials could be unexpectedly negative, zero, or even positive with a value much larger than the isotropic upper limit of 0.5 along definite directions. Our results uncover a correlation between compressibility and hardness, which offer insights on the prediction of new super-hard materials.
url http://dx.doi.org/10.1063/1.4904100
work_keys_str_mv AT chuanweihuang anisotropicelasticityandabnormalpoissonsratiosinsuperhardmaterials
AT rongpengli anisotropicelasticityandabnormalpoissonsratiosinsuperhardmaterials
AT langchen anisotropicelasticityandabnormalpoissonsratiosinsuperhardmaterials
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