"Influence of Particle Morphology on Angle of Repose Derived from Hoppe" by Chitta S. Sandeep, R. Feng et al.
 

Influence of Particle Morphology on Angle of Repose Derived from Hopper Flow Tests Using 3D DEM Simulations

Document Type

Conference Proceeding

Publication Date

1-1-2025

Abstract

The angle of repose holds significant importance within granular systems, serving as a key indicator of material packing and flow behavior. In this work, we investigated the impact of particle morphology on the repose angle (AOR) using a series of numerical simulations and laboratory measurements. For the experiments, granular materials are first loaded into a hopper and then released to fall freely under gravity into a vessel positioned below, and the angle of repose of the resulting pile is measured. Numerical simulations used the bubble pack technique to create clumps of pebbles with varying shapes. The results show that the AOR is strongly influenced by the shape of the clumps used in the simulations, allowing for the use of fewer pebbles to efficiently replicate the behavior of irregular particle shapes. Notably, differences in repose angle values between hopper flow tests and cylinder pull-out tests emphasize the importance of test methods in evaluating particle flowability.

Publication Title

Geotechnical Special Publication

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