What does this research mean for the field?

Stress path, particle shape, and packing density significantly govern the evolution of pore morphology and pore fabric anisotropy in granular materials during shearing, with strong interdependencies existing between pore orientation fabric and other structural measures. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To examine how stress paths, particle shapes, and packing densities govern the micromechanical evolution of pore morphology and fabric anisotropy during shear deformation.

August 29, 2026Journal of Engineering MechanicsOpen Access

Shear-Induced Pore Evolution in Granular Materials: Micromechanical Effects of Stress Path, Particle Shape, and Packing Density

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Authors

SMSuaiba MuftiIndian Institute of Science Bangalore MNMadhu Sudan NegiIndian Institute of Technology Mandi MMMousumi MukherjeeIndian Institute of Technology Mandi

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Implication

Simulation study reveals how stress paths and particle shapes alter pore morphology in granular assemblies, highlighting microstructural controls on soil mechanics.

Key Points

To examine how stress paths, particle shapes, and packing densities govern the micromechanical evolution of pore morphology and fabric anisotropy during shear deformation.
Conducted 3D discrete element method (DEM) simulations on granular assemblies of spherical and ellipsoidal particles across varying initial packing densities.
Applied three drained stress paths—axisymmetric compression, axisymmetric extension, and plane strain—coupled with 3D image analysis to segment and extract individual pore characteristics across shear strain levels.
Stress path, particle shape, and packing density significantly influence the evolutionary paths of pore morphology and directional pore fabric anisotropy during shearing.
Strong, strain-dependent interdependencies emerged between pore orientation fabric and other micromechanical measures, including particle orientation, contact normal directions, and contact force directions.

Cite This Study

Mufti et al. (2026) studied this question.

synapsesocial.com/papers/6a9298aa8e5d7d1fc0c107ca https://doi.org/10.1061/jenmdt.emeng-8872

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Implication

Simulation study reveals how stress paths and particle shapes alter pore morphology in granular assemblies, highlighting microstructural controls on soil mechanics.

Shear-Induced Pore Evolution in Granular Materials: Micromechanical Effects of Stress Path, Particle Shape, and Packing Density

Discussion

Member takes

Implication

Key Points

Cite This Study

Shear-Induced Pore Evolution in Granular Materials: Micromechanical Effects of Stress Path, Particle Shape, and Packing Density

Discussion

Member takes

Implication

Key Points

Cite This Study

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