Random generation of convex aggregates for DEM study of particle shape effect

Xiang Wang; Zhihong Nie; Jian Gong; Zhengyu Liang

doi:10.1016/j.conbuildmat.2020.121468

Random generation of convex aggregates for DEM study of particle shape effect

Xiang Wang, Zhihong Nie, Jian Gong, Zhengyu Liang

Department of Civil and Environmental Engineering

Research output: Journal article publication › Journal article › Academic research › peer-review

40 Citations (Scopus)

Abstract

In this study, the random generation of 3D convex aggregates is proposed for the numerical study of the particle shape effect in DEM simulation. First, the Bezier curve fitting technique is employed to construct a curve skeleton inside a randomly generated polyhedron. Then, a solid surface is generated based on the curve skeleton using the Gregory surface interpolation algorithm. Next, convex aggregates are created inside both regular and irregular polyhedrons to demonstrate the capability of the proposed algorithm. Finally, DEM simulation of convex aggregates with different roundness features is performed to study the effect of roundness on the shear behavior of granular aggregates.

Original language	English
Article number	121468
Journal	Construction and Building Materials
Volume	268
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.121468
Publication status	Published - 25 Jan 2021

Keywords

Bezier curve fitting
Convex aggregates
DEM simulation
Gregory surface interpolation
Random generation

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2020.121468

Cite this

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title = "Random generation of convex aggregates for DEM study of particle shape effect",

abstract = "In this study, the random generation of 3D convex aggregates is proposed for the numerical study of the particle shape effect in DEM simulation. First, the Bezier curve fitting technique is employed to construct a curve skeleton inside a randomly generated polyhedron. Then, a solid surface is generated based on the curve skeleton using the Gregory surface interpolation algorithm. Next, convex aggregates are created inside both regular and irregular polyhedrons to demonstrate the capability of the proposed algorithm. Finally, DEM simulation of convex aggregates with different roundness features is performed to study the effect of roundness on the shear behavior of granular aggregates.",

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AU - Wang, Xiang

AU - Nie, Zhihong

AU - Gong, Jian

AU - Liang, Zhengyu

PY - 2021/1/25

Y1 - 2021/1/25

N2 - In this study, the random generation of 3D convex aggregates is proposed for the numerical study of the particle shape effect in DEM simulation. First, the Bezier curve fitting technique is employed to construct a curve skeleton inside a randomly generated polyhedron. Then, a solid surface is generated based on the curve skeleton using the Gregory surface interpolation algorithm. Next, convex aggregates are created inside both regular and irregular polyhedrons to demonstrate the capability of the proposed algorithm. Finally, DEM simulation of convex aggregates with different roundness features is performed to study the effect of roundness on the shear behavior of granular aggregates.

AB - In this study, the random generation of 3D convex aggregates is proposed for the numerical study of the particle shape effect in DEM simulation. First, the Bezier curve fitting technique is employed to construct a curve skeleton inside a randomly generated polyhedron. Then, a solid surface is generated based on the curve skeleton using the Gregory surface interpolation algorithm. Next, convex aggregates are created inside both regular and irregular polyhedrons to demonstrate the capability of the proposed algorithm. Finally, DEM simulation of convex aggregates with different roundness features is performed to study the effect of roundness on the shear behavior of granular aggregates.

KW - Bezier curve fitting

KW - Convex aggregates

KW - DEM simulation

KW - Gregory surface interpolation

KW - Random generation

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DO - 10.1016/j.conbuildmat.2020.121468

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SN - 0950-0618

VL - 268

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 121468

ER -

Random generation of convex aggregates for DEM study of particle shape effect

Abstract

Keywords

ASJC Scopus subject areas

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