Micromechanical modeling of the elasto-viscoplastic behavior of granite

Tao Zeng; Jian-Fu Shao; Wei-Ya Xu

doi:10.1016/j.crme.2014.11.005

Micromechanical modeling of the elasto-viscoplastic behavior of granite

Tao Zeng ^1,²; Jian-Fu Shao ^1,² ; Wei-Ya Xu ¹

¹ Hohai University, Nanjing 210098, China
² Laboratoire de mécanique de Lille, UMR 8107 CNRS, cité scientifique, 59655 Villeneuve-d'Ascq cedex, France

Comptes Rendus. Mécanique, Mechanics of granular and polycrystalline solids, Volume 343 (2015) no. 2, pp. 121-132.

Abstract

We present in this paper a micromechanics-based elasto-viscoplastic approach for modeling the time-dependent deformation of granite. Inspired by the polycrystalline theory of metallic materials, the sliding behavior in an individual grain is regarded as the sole source of plastic deformation, which is characterized by a Mohr–Coulomb-type yield criterion and a non-associated plastic potential. The micro–macro transition is realized within the framework of Hill's self-consistent approach. The performance of the proposed model is evaluated by several case studies and by reproducing experimental data.

Received: 2014-01-26
Accepted: 2014-07-04
Published online: 2015-01-15

DOI: 10.1016/j.crme.2014.11.005

Mots-clés : Micromechanical, Self-consistent, Polycrystalline theory, Elasto-viscoplastic, Granite

Author's affiliations:

Tao Zeng ^{1, 2}; Jian-Fu Shao ^{1, 2}; Wei-Ya Xu ¹

¹ Hohai University, Nanjing 210098, China
² Laboratoire de mécanique de Lille, UMR 8107 CNRS, cité scientifique, 59655 Villeneuve-d'Ascq cedex, France

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     author = {Tao Zeng and Jian-Fu Shao and Wei-Ya Xu},
     title = {Micromechanical modeling of the elasto-viscoplastic behavior of granite},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {121--132},
     publisher = {Elsevier},
     volume = {343},
     number = {2},
     year = {2015},
     doi = {10.1016/j.crme.2014.11.005},
     language = {en},
}

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Tao Zeng; Jian-Fu Shao; Wei-Ya Xu. Micromechanical modeling of the elasto-viscoplastic behavior of granite. Comptes Rendus. Mécanique, Mechanics of granular and polycrystalline solids, Volume 343 (2015) no. 2, pp. 121-132. doi : 10.1016/j.crme.2014.11.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2014.11.005/

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