Paper Title:
Numerical Investigation on Polar Effects in Localized Shear Zone
  Abstract

Numerical simulations related to polar effects in an infinite extended granular layer under shearing movement and constant vertical pressure are presented. The mechanical behavior of cohesionless granular soil is described within the framework of micro-polar (Cosserat) continuum and using an elasto-plastic constitutive relation. The influence of Cosserat rotations and couple stresses are taken into account using the mean grain size as characteristic length. Finite element method in Updated Lagrangian (UL) frame is used to consider large deformations during calculations. The numerical results demonstrate that for large shearing movement, the shear deformations within the granular layer are localized into a narrow zone. The FE-calculations indicate that the polar effects manifest by the appearance of noticeable grain rotations, high void ratios, pronounced volume changes within the localized shear zone.

  Info
Periodical
Key Engineering Materials (Volumes 452-453)
Edited by
A. Saimoto and M.H. Aliabadi
Pages
381-384
DOI
10.4028/www.scientific.net/KEM.452-453.381
Citation
B. Ebrahimian, A. Noorzad, "Numerical Investigation on Polar Effects in Localized Shear Zone", Key Engineering Materials, Vols. 452-453, pp. 381-384, 2011
Online since
November 2010
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Price
$32.00
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