Investigation of direct shear interface test using micro-polar continuum approach

B. Ebrahimian*, E. Bauer

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

This paper investigates the influence of the length scale of a cohesionless granular soil specimen on the evolution of shear resistance in the direct shear interface test. Numerical simulations are carried out for two different specimen sizes using a micro-polar hypoplastic material model and the finite element method in the updated Lagrange frame. Due to the presence of the lateral rigid boundaries of shear box, the deformation and stress fields become significantly inhomogeneous. Correspondingly, the mobilized shear resistance and the shear band thickness are not constant along the interface. It is shown that, for the case of medium rough wall, some shear localization occurs along part of the interface between the sand specimen and the rough bottom surface and some shear localization takes place within the sand specimen. The evolution of the average mobilized friction angle obtained from the interface shear test is also influenced by the scaling effect of the testing device particularly at the beginning of shearing.

Originalspracheenglisch
TitelSpringer Series in Geomechanics and Geoengineering
Herausgeber (Verlag)Springer Verlag
Seiten143-148
Seitenumfang6
Bandnone
ISBN (Print)9783319135052
DOIs
PublikationsstatusVeröffentlicht - 2015
Veranstaltung10th International Workshop on Bifurcation and Degradation in Geomaterials, IWBDG 2014 - Hong Kong, Hong Kong
Dauer: 28 Mai 201430 Mai 2014

Publikationsreihe

NameSpringer Series in Geomechanics and Geoengineering
Bandnone
ISSN (Print)18668755
ISSN (elektronisch)18668763

Konferenz

Konferenz10th International Workshop on Bifurcation and Degradation in Geomaterials, IWBDG 2014
LandHong Kong
OrtHong Kong
Zeitraum28/05/1430/05/14

ASJC Scopus subject areas

  • !!Geotechnical Engineering and Engineering Geology
  • !!Mechanics of Materials

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  • Dieses zitieren

    Ebrahimian, B., & Bauer, E. (2015). Investigation of direct shear interface test using micro-polar continuum approach. in Springer Series in Geomechanics and Geoengineering (Band none, S. 143-148). (Springer Series in Geomechanics and Geoengineering; Band none). Springer Verlag. https://doi.org/10.1007/978-3-319-13506-9_21