Macro–microscopic mechanism of suffusion in calcareous sand under tidal fluctuations by coupled CFD-DEM

H **ong, Y Qiu, J Liu, ZY Yin, X Chen - Computers and Geotechnics, 2023 - Elsevier
Numerous offshore transportation infrastructures built with delicate calcareous sand (CS)
experience intricate seepage conditions caused by tidal fluctuations. Traffic loads can cause …

A machine learning-based multi-scale computational framework for granular materials

S Guan, T Qu, YT Feng, G Ma, W Zhou - Acta Geotechnica, 2023 - Springer
With the development of experimental measurement technology and high-fidelity numerical
simulations of granular materials, empirical-based classical constitutive models may not be …

Spatial clustering of microscopic dynamics governs the slip avalanche of sheared granular materials

J Mei, G Ma, L Tang, K Gao, W Cao, W Zhou - International Journal of …, 2023 - Elsevier
Establishing quantifiable links between individual-particle dynamics and macroscopic
response of granular materials has been a longstanding challenge, with implications in …

Modeling shear-induced solid-liquid transition of granular materials using persistent homology

J Mei, G Ma, J Liu, F Nicot, W Zhou - Journal of the Mechanics and Physics …, 2023 - Elsevier
This paper investigates the transition between the solid and liquid phases of sheared
granular materials from the perspective of the contact network. Tools from persistent …

A network-based investigation on the strong contact system of granular materials under isotropic and deviatoric stress states

J Liu, X Wu, J Jiang, Z Ding, C Lü, X Shi - Computers and Geotechnics, 2023 - Elsevier
The contact network is essential in linking the macroscale and microscale behaviors of
granular materials. Particles and contacts are equivalent to nodes and links in the framework …

Microscopic origin of shape-dependent shear strength of granular materials: a granular dynamics perspective

Y Zou, G Ma, J Mei, J Zhao, W Zhou - Acta Geotechnica, 2022 - Springer
The shear strength of granular materials has been found to increase nonlinearly with particle
asphericity before reaching a steady value independent of particle asphericity. Although the …

Graph neural network unveils the spatiotemporal evolution of structural defects in sheared granular materials

J Mei, G Ma, W Cao, T Wu, W Zhou - International Journal of Plasticity, 2025 - Elsevier
The disordered nature of granular materials poses great difficulty to the accurate
characterization of microscopic structures. Despite numerous handcrafted structural …

Particle shape transforms the driving of shear stress in granular materials

Y Zou, G Ma, S Zhao, S Chen, W Zhou - Powder Technology, 2023 - Elsevier
Particle shape has been regarded as one of the key factors in determining the macroscopic
shear strength of granular materials. Despite great efforts, the underlying mechanism of the …

Machine learning bridges microslips and slip avalanches of sheared granular gouges

G Ma, J Mei, K Gao, J Zhao, W Zhou, D Wang - Earth and Planetary Science …, 2022 - Elsevier
Understanding the origin of stress drop of fault gouges may offer deeper insights into many
geophysical processes such as earthquakes. Microslips of sheared granular gouges were …

A network-based investigation on static liquefaction of sheared granular materials

W Cao, J Mei, X Yang, W Zhou, X Chang, G Ma - Granular Matter, 2024 - Springer
Granular materials may undergo static liquefaction under undrained shearing, which is
related to many natural hazards, such as landslides. Despite great efforts, the overall …