Influence of particle shape on the microstructure evolution and the mechanical properties of granular materials

Author(s)
E. Liu, J. Tian, L. Jiang, R. Xu, X. Jiang, Y. Sun
Publisher
Elsevier
Source
Comptes Rendus Mécanique
Keywords
Average path length, Direct shear simulation, fabric evolution, Particle Rotation, Particle shape, Rowe's stress–dilatancy
Year
2018

In order to study the influence of particle shape on the microstructure evolution and the mechanical properties of granular materials, a two-dimensional DEM analysis of samples with three particle shapes, including circular particles, triangular particles, and elongated particles, is proposed here to simulate the direct shear tests of coarse-grained soils. For the numerical test results, analyses are conducted in terms of particle rotations, fabric evolution, and average path length evolution. A modified Rowe’s stress–dilatancy equation is also proposed and successfully fitted onto simulation data.

 

Keywords: Particle shape, Direct shear simulation, Particle rotation, Fabric evolution, Average path length, Rowe’s stress–dilatancy,

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