Prediction of undrained behavior of isotropically and anisotropically consolidated Firoozkuh sand: instability and flow liquefaction

A Lashkari, A Karimi, K Fakharian… - International Journal …, 2017 - ascelibrary.org
Recent experimental findings highlight the impact of anisotropic consolidation on triggering
flow liquefaction failures. Results of a series of undrained tests on isotropic and anisotropic …

Capillary suction measurements in granular materials and direct numerical simulations using X-ray computed tomography microstructure

M Mohsin Thakur, D Penumadu… - Journal of Geotechnical …, 2020 - ascelibrary.org
Because of the recent advancements in hardware and reconstruction algorithms, multiphase
flow modeling in porous media is experiencing a shift toward using advanced imaging …

A rate-dependent model for sand to predict constitutive response and instability onset

M Mukherjee, A Gupta, A Prashant - Acta Geotechnica, 2021 - Springer
A constitutive model has been proposed for predicting rate-dependent stress–strain
response of sand and further implemented in finite element code to explore the influence of …

Two-dimensional discrete element simulation of the mechanical behavior and strain localization of anisotropic dense sands

X Lü, S Zeng, L Li, J Qian, M Huang - Granular Matter, 2019 - Springer
This paper presents a microscopic investigation on the effects of initial anisotropy, drainage
condition, and consolidation state on the mechanical behavior and strain localization of …

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

M Mukherjee, A Gupta, A Prashant - Computers and Geotechnics, 2016 - Elsevier
The diffused and localized instabilities in sand under drained biaxial loading have been
analyzed here following a plane strain bifurcation framework, where the rate independent …

Mesh size sensitivity and effect of perturbation intensity on coupled undrained instability analysis in sands

D Bhattacharya, A Prashant - Eighth International Conference on …, 2019 - ascelibrary.org
The sudden loss in load carrying capacity of a soil specimen from its homogeneous material
response is coined as the onset of instability or bifurcation in geomaterials. A numerical …

Liquefaction instability analysis using extended Mohr-Coulomb model under axisymmetric conditions

S Sharma, V Parol, A Prashant - … for Computer Methods and Advances in …, 2022 - Springer
The study presents a theoretical analysis of liquefaction instability in sands using Extended
Mohr Coulomb model. Experimental observations reported in the literature have indicated a …

DEM Study of Shear Band Formation in Granular Materials under True Triaxial Test Conditions

AH Hadi, AA Mirghasemi - Civil Engineering Infrastructures Journal, 2022 - ceij.ut.ac.ir
Subjected to external loads, granular materials experience severe deformation in a narrow
zone before their failure. This phenomenon, which is called strain localisation or shear band …

Perturbation intensity and mesh convergence in coupled undrained instability analysis in sands under biaxial loading

D Bhattacharya, M Mukherjee… - International Journal of …, 2020 - ascelibrary.org
The influence of perturbation magnitude and extent of area on the emergence of localized
instability in sand specimens subjected to biaxial loading has been explored within a …

[PDF][PDF] Transient Analysis of Instability in Saturated Sand under Undrained Triaxial Loading Condition

P Yadav, V Parol, A Prashant - 2023 - publishing.argo-e.com
The present study focuses on finite element analysis (FEM) of instability in saturated sands.
The numerical simulation is performed under undrained conditions on the saturated triaxial …