An experimental database for the development, calibration and verification of constitutive models for sand with focus to cyclic loading: part I—tests with monotonic …

T Wichtmann, T Triantafyllidis - Acta Geotechnica, 2016 - Springer
For numerical studies of geotechnical structures under earthquake loading, aiming to
examine a possible failure due to liquefaction, using a sophisticated constitutive model for …

Critical state soil mechanics for cyclic liquefaction and postliquefaction behavior: DEM study

MM Rahman, HBK Nguyen, AB Fourie… - Journal of Geotechnical …, 2021 - ascelibrary.org
Discrete-element method (DEM) simulations of three-dimensional (3D) assemblies of
ellipsoid particles were used to evaluate the critical state (CS) for both drained and …

[HTML][HTML] Influence of non-plastic fines content on maximum shear modulus of granular materials

M Goudarzy, MM Rahman, D König, T Schanz - Soils and Foundations, 2016 - Elsevier
Resonant column tests were conducted on clean Hostun sand and Hostun sand mixed with
5%, 10%, 20%, 30% and 40% fines (particle size smaller than 0.075 mm) to assess the …

The critical state behaviour of granular material in triaxial and direct simple shear condition: A DEM approach

HBK Nguyen, MM Rahman, A Fourie - Computers and Geotechnics, 2021 - Elsevier
The critical state (CS), the anchor concept in the critical state soil mechanics (CSSM)
framework, has been comprehensively evaluated in triaxial stress conditions, where all the …

Modelling the static liquefaction of sand with low-plasticity fines

MM Rahman, SCR Lo, YF Dafalias - Géotechnique, 2014 - icevirtuallibrary.com
There have been significant advances in understanding of the effect of fines content, fc, on
the mechanical response of sand with fines. The concepts of equivalent granular void ratio …

The failure modes of granular material in undrained cyclic loading: A critical state approach using DEM

R Kolapalli, MM Rahman, MR Karim, HBK Nguyen - Acta Geotechnica, 2023 - Springer
Cyclic liquefaction failure modes are directly related to the consequence of liquefaction and
important for mitigation strategies. Two common failure modes, cyclic mobility (CM) and …

Advances in Coupling Computational Fluid Dynamics and Discrete Element Method in Geotechnical Problems

Y Cao, HBK Nguyen, D Aikins, MR Karim, MM Rahman - Geotechnics, 2023 - mdpi.com
In some cases, the water content in granular soil increases to the extent that it becomes
saturated, which noticeably alters its responses. For example, the pore water pressure within …

Undrained behaviour of granular material and the role of fabric in isotropic and K0 consolidations: DEM approach

HBK Nguyen, MM Rahman, AB Fourie - Géotechnique, 2017 - icevirtuallibrary.com
The behaviour of granular material was investigated by simulating an undrained triaxial
compression test for three-dimensional assembly of ellipsoid particles over a wide range of …

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 …

[HTML][HTML] Cyclic liquefaction screening of sand with non-plastic fines: Critical state approach

MM Rahman, TG Sitharam - Geoscience Frontiers, 2020 - Elsevier
There have been significant advances in the application of critical state, CS, in liquefaction
potential assessment. This was done by comparing state parameter, ψ with estimated …