Micromechanical formulation of the mobilized stress ratio under principal stress rotation in granular materials

Homayoun Shaverdi, Farzin Kalantary, Mohd. Raihan Taha

Research output: Contribution to journalConference article

Abstract

In this paper the mobilized stress ratio is investigated by using the static equilibrium at the micro scale level analysis. The mobilized stress ratio is obtained in the distribution of the contact normal, E(β), and the inter-particle mobilized friction angle, φμ. The second invariant of the fabric tensor, α is used to account for fabric and its evolution. There is a difference between the theoretical rotation of principal stress axes that is obtained by the classical equations of the mechanics of materials and the experimental rotation of principal stress axes. The experimental rotation is related to the anisotropic parameter, α. The noncoincidence between the theoretical and experimental is related to the relative direction of the mobilized plane and the bedding plane. A comparison with experimental tests demonstrates the validity of this formulation.

Original languageEnglish
Article number15025
JournalEPJ Web of Conferences
Volume140
DOIs
Publication statusPublished - 30 Jun 2017
Event8th International Conference on Micromechanics on Granular Media, Powders and Grains 2017 - Montpellier, France
Duration: 3 Jul 20177 Jul 2017

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stress ratio
granular materials
formulations
friction
tensors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Micromechanical formulation of the mobilized stress ratio under principal stress rotation in granular materials. / Shaverdi, Homayoun; Kalantary, Farzin; Taha, Mohd. Raihan.

In: EPJ Web of Conferences, Vol. 140, 15025, 30.06.2017.

Research output: Contribution to journalConference article

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