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The poromechanics of heterogeneous media is reformulated in a discrete framework using the lattice element method (LEM) that accounts for the presence of interfaces as well as local microtextural and elastic variations. The exchange of mechanical information between pore and solid(s) is captured by means of force field potentials for these domains, which eliminate the requirement of scale separability of continuum-based poromechanics approaches. In congruence with μVT and NPT ensembles of statistical mechanics, discrete expressions for Biot poroelastic coefficients are derived. Considering harmonic-type interaction potentials for each link, analytical expressions for both isotropic and transversely isotropic effective elasticity are presented. The theory is validated against continuum-based expressions of Biot poroelastic coefficients for porous media with isotropic and transversely isotropic elastic solid behavior.

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Monfared, Siavash -  Laubie, Hadrien H -  Radjai, Farhang -  Pellenq, Roland Jm -  Ulm, Franz -  Josef - 

Id.: 70434425

Versión: 1.0

Estado: Final

Tipo de recurso: Article  -  http://purl.org/eprint/type/JournalArticle  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Creative Commons Attribution-Noncommercial-Share Alike

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Monfared
[References] http://dx.doi.org/10.1061/(ASCE)NM.2153-5477.0000136
[References] Journal of Nanomechanics and Micromechanics

Fecha de contribución: 19-nov-2017


* 2153-5434
* 2153-5477
* Monfared, Siavash et al. “Mesoscale Poroelasticity of Heterogeneous Media.” Journal of Nanomechanics and Micromechanics 7, 4 (December 2017): 04017016 © 2017 American Society of Civil Engineers (ASCE)

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