Authorship：Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.powtec.2024.120078

Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.compgeo.2024.106342

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

<jats:p> This contribution provides high-fidelity images of real granular materials with the aid of X-ray micro-computed tomography (μCT), and employs a multi-sphere representation to reconstruct non-spherical particles. Through discrete-element method (DEM) simulations of granular samples composed of these non-spherical clumps, the effect of particle shape on the macroscopic mechanical response and microscopic soil fabric evolution is examined for soil assemblies under triaxial compression. Simulation results indicate that materials with more irregular particles tend to show higher shear resistance in both peak and critical states, while exhibiting higher void ratio under isotropic loading conditions and in the critical state. The proposed critical state parameters for describing the sensitivity of the mean coordination number to confining pressures are larger as particles become more irregular. At a microscopic level of observation, directional and scalar parameters of particle contacts are sensitive to predefined particle shapes. More irregular materials appear to exhibit higher fabric anisotropy with respect to particle orientation in the critical state, while the branch vector is affected by both contact modes and particle shape. The critical stress ratio from the simulation results is validated by comparing with experimental results, and further found to be linearly linked to the shape-weighted fabric anisotropy indices. </jats:p>

DOI： 10.1680/jgeot.23.00162

Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1007/s11440-023-02190-y

Authorship：Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.compgeo.2024.106235

Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.sandf.2024.101443

Publishing type：Research paper (international conference proceedings)  

<jats:p>It is empirically known that the packing property and mechanical responses of cohesionless granular materials are influenced by grain shape. For example, the attainable range of void ratio depends on grain shape; angular materials tend to exhibit greater friction angles. Besides, shear wave velocity (<jats:italic>V<jats:sub>s</jats:sub></jats:italic> ) and small-strain shear modulus (<jats:italic>G<jats:sub>0</jats:sub></jats:italic> ) of sphere assemblies are affected by surface roughness. However, consensus has yet to be reached on the combined effect of grain shape and surface roughness on <jats:italic>G<jats:sub>0</jats:sub></jats:italic> and stress-strain relation. This contribution aims to evaluate the shape-roughness combined effect on the strain-dependent mechanical responses of granular materials. Three groups of glass beads having different grain shapes and a silica sand were used, and their grain surfaces were roughened through a systematic procedure using a milling machine. In total, eight materials were subjected to triaxial compression after measurement of <jats:italic>V<jats:sub>s</jats:sub></jats:italic>. The experimental results reveal that the stress-strain relation of angular particles is remarkably affected by the surface roughness, whereas the roughness effect on the stress-dependent variation in <jats:italic>G<jats:sub>0</jats:sub></jats:italic> is limited for angular particles.</jats:p>

DOI： 10.1051/e3sconf/202454405006

Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jrmge.2022.12.004

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

DOI： 10.1016/j.sandf.2021.101092

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

DOI： 10.1016/j.compgeo.2021.104560

Authorship：Lead author,　Corresponding author  

DOI： 10.1007/978-3-031-11898-2_204

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

DOI： 10.1016/j.powtec.2021.04.068

Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.compgeo.2021.104043

Scopus

Authorship：Lead author   Publishing type：Research paper (scientific journal)  

DOI： 10.1007/s11440-020-01023-6

Scopus

Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.apm.2020.09.019

Scopus

Authorship：Lead author   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.compgeo.2020.103772

Scopus

Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.compgeo.2018.11.024

Scopus

Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.compgeo.2018.01.004

Scopus

Publishing type：Research paper (scientific journal)  

DOI： 10.1002/nag.2785

Scopus

Presentation type：Oral presentation (general)  

Presentation type：Oral presentation (general)  

Presentation type：Oral presentation (general)