Výsledky vyhledávání - "Georgios I. Sfyris"

Constitutive modeling of three-dimensional monoatomic linear elastic multilattices

Autor: Dimitrios Sfyris, Georgios I Sfyris

Publikováno v: Mathematics and Mechanics of Solids. 28:973-988

While simple lattices realize only the seven holohedral crystal classes, multilattices can realize all 32 crystal classes in three dimensions. For classical linear elasticity, from the constitutive point of view, the multilattice structure necessitat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c72cbfda8096956734a75694acdd1d8b
https://doi.org/10.1177/10812865221105456

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Influence of partial blistering on the global and the local stress and couple stress field for a monolayer graphene resting on substrate

Autor: D. Sfyris, Georgios I. Sfyris

Publikováno v: Mathematics and Mechanics of Solids. 23:617-635

Partial delamination of a thin film attached on a substrate is a phenomenon which is likely to occur in many film/substrate systems. Such a delamination strongly affects the developed stress and co...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f90cfd79b80ab1cacf00c3d972c02035
https://doi.org/10.1177/1081286516684665

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Curvature dependent surface energy for free standing monolayer graphene: geometrical and material linearization with closed form solutions

Autor: Georgios I. Sfyris, D. Sfyris, Costas Galiotis

Continuum modeling of a free-standing graphene monolayer, viewed as a two dimensional 2-lattice, requires specifications of the components of the shift vector that act as an auxiliary variable. The field equations are then the equations ruling the sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53c71794ea2bb2eae723d8dfbfe8133a
http://arxiv.org/abs/1801.05260

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Curvature dependent surface energy for a free standing monolayer graphene: some closed form solutions of the nonlinear theory

Autor: D. Sfyris, Costas Galiotis, Georgios I. Sfyris

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34ec9f6fdd65bb311b358e3b8dd9322f

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Constitutive modeling of some 2D crystals: graphene, hexagonal BN, MoS$_2$, WSe$_2$ and NbSe$_2$

Autor: Georgios I. Sfyris, Costas Galiotis, D. Sfyris

We lay down a nonlinear elastic constitutive framework for the modeling of some 2D crystals of current interest. The 2D crystals we treat are graphene, hexagonal boron nitride and some metal dichalcogenides: molybdenium disulfide (MoS$_2$), tungsten

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Freedericksz instability for the twisted nematic device: A three-dimensional analysis

Autor: Georgios I. Sfyris, Kostas Danas, G. Wen, Nicolas Triantafyllidis

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2016, 94, pp.012704-1-012704-12. ⟨10.1103/PhysRevE.94.012704⟩

Of interest here is the fully three-dimensional analysis of the Freedericksz transition for the twisted nematic device (TND), which is widely used in liquid-crystal display monitors. Using a coupled electromechanical variational formulation, the prob

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The methods of complex potentials, singular integral equations and integral transformations in a series of problems for the reinforcement of cracked plates

Autor: Georgios I. Sfyris, S. M. Mkhitaryan, D. I. Bardzokas

Publikováno v: Acta Mechanica. 221:147-174

We study the initiation and propagation of a vertical crack in an elastic semi-infinite plate, reinforced on its boundary by an infinite discontinuous stringer within the limits of the theory of brittle failure. The plate is subjected to uniform dist

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https://doi.org/10.1007/s00707-011-0473-3

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Excitation of shear waves in a piezoceramic medium with partially electrodized tunnel openings strengthened by a rigid stringer

Autor: D. I. Bardzokas, Georgios I. Sfyris

Publikováno v: Mathematical Problems in Engineering, Vol 2005, Iss 2, Pp 231-244 (2005)

An antiplane mixed boundary electroelasticity of a stationary wave process in an unbounded piezoceramic medium containing tunnel heterogeneities of opening or thin rigid inclusion (stringer) type is considered. The excitation of an electric field occ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a97488d7555654c6639011b7d7ab6624
http://www.hindawi.net/access/get.aspx?journal=mpe&volume=2005&pii=S1024123X04305016

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Conditions of cracking of a stringer

Autor: Georgios I. Sfyris, D. I. Bardzokas

Publikováno v: Mathematical Problems in Engineering, Vol 2005, Iss 3, Pp 377-389 (2005)

In the limits of brittle failure of materials, we investigate the problem of possible cracking of an infinite stringer on the boundary of an elastic half-infinite plate. The plate is exposed to tensioning by uniformly distributed forces, and also to

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https://doi.org/10.1155/mpe.2005.377

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Nonlinear electro-magneto-mechanical constitutive modelling of monolayer graphene

Autor: Georgios I. Sfyris, D. Sfyris, Roger Bustamante

Publikováno v: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 472:20150750

Using the classical theory of invariants for the specific class of graphene's symmetry, we constitutively characterize electro-magneto-mechanical interactions of graphene at continuum level. Graphene's energy depends on five arguments: the Finger str

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2051c6d6fc4d7bd4d50b56370ecce32
https://doi.org/10.1098/rspa.2015.0750

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