Drained instability analysis of sand under biaxial loading using a 3D material model

Mukherjee, M. K.; Gupta, Anurag; Prashant, Amit

doi:10.1016/j.compgeo.2016.05.023

Cited by 9 publications

(2 citation statements)

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“…An exception could be the study by Andrade and Borja, in which a similar comparison was partially examined based on the evolution of localization tensor while simulating a true triaxial compression in dense sand. In a recent theoretical study, Mukherjee et al analyzed the variation in shear localization characteristics of loose sand, in terms of initial localization strain and shear band angle, due to the variation in the principal stress ratio during true triaxial compression. Despite the qualitative agreement with the experimental results of Wang and Lade, the results of Mukherjee et al only reflect the effects of stress path variation on shear localization but not the variation of friction angle due to the use of a Drucker‐Prager‐type failure criterion.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent theoretical study, Mukherjee et al 31 analyzed the variation in shear localization characteristics of loose sand, in terms of initial localization strain and shear band angle, due to the variation in the principal stress ratio during true triaxial compression. Despite the qualitative agreement with the experimental results of Wang and Lade, 6 the results of Mukherjee et al 31 only reflect the effects of stress path variation on shear localization but not the variation of friction angle due to the use of a Drucker-Prager-type failure criterion. Such Lode angle dependency on localization, however, has been extensively studied for other pressure sensitive materials.…”

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confidence: 99%

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Influence of Lode angle‐dependent failure criteria on shear localization analysis in sand

Sisodiya

Das

2018

Num Anal Meth Geomechanics

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Summary Geotechnical experiments show that Lode angle‐dependent constitutive formulations are appropriate to describe the failure of geomaterials. In the present study, we have adopted one such class of failure criteria along with a versatile constitutive relationship to theoretically analyze the effects of Lode angle on localized shear deformation or shear band formation in loose sand for both drained and undrained conditions. We determine the variation in the possible stress states for shear localization due to the introduction of Lode angle by considering the localized deformation as a bifurcation problem. Further, similar bifurcation analysis is performed for the stress states along a specific loading path, namely, plane strain compression at the constitutive level. In addition, the plane strain compression tests have been simulated as a boundary value finite element problem to see how Lode angle affects the post‐localization response. Results show that the inclusion of a Lode angle parameter within the failure criterion has considerable effects on the onset, plastic strain, and propagation of shear localization in loose sand specimens. For drained condition, we notice early inception of shear localization and multiple band formation when the Lode angle‐dependent failure criterion is used. Undrained localization characteristics, however, found to be independent of Lode angle consideration.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%