3D Dem Simulations And Experiments Exploring Low-Velocity Projectile Impacts Into A Granular Bed

Keywords

Crater; Discrete element method; Impact; Particles

Abstract

In this study, a spherical projectile vertical impact into a granular bed was numerically investigated with 3D Discrete Element Method (DEM) and validated with experiments. We vary the impact velocity (0.9-3.6 m/s) and size of particles in the bed (1-3 mm) and study the changes in ejecta velocity distribution for different impacts. We find good agreement for the total ejecta mass and for the velocity distribution of the ejecta between simulations and experiments, validating the numerical model and method for predicting the outcomes of low-velocity impacts into granular media. In addition, we analyzed the influences of granular bed size, solid volume fraction and particle density using the DEM and present the results of these simulations that could not readily be reproduced experimentally. The experimentally validated DEM thus enables exploration of parameter spaces that are impractical for experimental study.

Publication Date

1-1-2016

Publication Title

Powder Technology

Volume

288

Number of Pages

303-314

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.powtec.2015.11.022

Socpus ID

84947240170 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84947240170

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