Variability of Young’s modulus and Poisson’s ratio of hexagonal crystals

Komarova, M.A.; Городцов, В. А.; Lisovenko, D. S.

doi:10.1088/1757-899x/347/1/012019

Cited by 3 publications

(1 citation statement)

References 25 publications

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“… it was shown that Cd has negative Poisson's ratio, which was proved to be wrong . This mistake is connected with the wrong calculation of the compliance coefficients and it was shown that Poisson's ratio of Cd ranges from 0.1 to 0.7 …”

Section: Introductionmentioning

confidence: 99%

Elastic Properties of Fullerites and Diamond‐Like Phases

Rysaeva

Baimova

Lisovenko

et al. 2018

Physica Status Solidi (b)

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Diamond‐like structures, that include sp2 and sp3 hybridized carbon atoms, are of considerable interest nowadays. In the present work, various carbon auxetic structures are studied by the combination of molecular dynamics (MD) and analytical approach. Two fullerites based on the fullerene C60 and fullerene‐like molecule C48 are investigated as well as diamond‐like structures based on other fullerene‐like molecules (called fulleranes), carbon nanotubes (called tubulanes) and graphene sheets. MD is used to find the equilibrium states of the structures and calculate compliance and stiffness coefficients for stable configurations. Analytical methods are used to calculate the engineering elastic coefficients (Young's modulus, Poisson's ratio, shear modulus and bulk modulus), and to study their transformation under rotation of the coordinate system. All the considered structures are partial auxetics with the negative value of Poisson's ratio for properly chosen tensile directions. It is shown that some of these structures, in a particular tension direction, have a very high Young's modulus, that is, 1852 GPa for tubulane TA6.

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Section: Introductionmentioning

confidence: 99%

Elastic Properties of Fullerites and Diamond‐Like Phases

Rysaeva

Baimova

Lisovenko

et al. 2018

Physica Status Solidi (b)

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Extreme values of Young’s modulus and Poisson’s ratio of hexagonal crystals

Городцов

Lisovenko

2019

Mechanics of Materials

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Molecular dynamics exploration of the temperature-dependent elastic, mechanical, and anisotropic properties of hcp ruthenium

Güler,

Uğur,

Güler

et al. 2024

Eur. Phys. J. Plus

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Molecular dynamics calculations were performed for the hitherto unclarified temperature-dependent elastic, mechanical, and anisotropic properties of the hexagonal closed pack (hcp) ruthenium (Ru) between 0 and 1200 K. All elastic stiffness constants were found to decrease with increasing temperature. Under the examined temperature range, hcp Ru obeys Born stability conditions. Further, both Pugh ratio analyses and calculated Poisson ratio values mutually suggest the brittle character of hcp Ru between 0 and 1200 K. The intricate hardness behavior of hcp Ru was also obtained and discussed throughout the work. For the considered temperature range, hcp Ru exhibits apparent elastic anisotropy that exponentially increases with increasing temperature. Moreover, presently obtained ground state (T = 0 K and P = 0 GPa) theoretical data for hcp Ru agree well with the former experimental and theoretical data. The present findings on the temperature-dependent characteristics of this metal may further inspire future applied works. Graphical abstract

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Variability of Young’s modulus and Poisson’s ratio of hexagonal crystals

Cited by 3 publications

References 25 publications

Elastic Properties of Fullerites and Diamond‐Like Phases

Elastic Properties of Fullerites and Diamond‐Like Phases

Extreme values of Young’s modulus and Poisson’s ratio of hexagonal crystals

Molecular dynamics exploration of the temperature-dependent elastic, mechanical, and anisotropic properties of hcp ruthenium

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