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Single particle fragmentation in ultrasound assisted impact comminution

Authors
  • Wittel, Falk K.1
  • 1 ETH Zurich, Computational Physics for Engineering Materials, Institute for Building Materials (IFB), Schafmattstrasse 6, HIF, Zurich, 8093, Switzerland , Zurich (Switzerland)
Type
Published Article
Journal
Granular Matter
Publisher
Springer-Verlag
Publication Date
Apr 18, 2010
Volume
12
Issue
4
Pages
447–455
Identifiers
DOI: 10.1007/s10035-010-0189-4
Source
Springer Nature
Keywords
License
Yellow

Abstract

Impact fragmentation is the underlying principle of comminution milling of dry, bulk solids. Unfortunately the outcome of the fragmentation process is more or less determined by the dimensionality of the impactor and its impact velocity. Since fragmentation is dominated by interfering shock waves, manipulating traveling shock waves and adding energy to the system during its fragmentation could be a promising approach to manipulate fragment mass distributions and energy input. In a former study we explored mechanisms in impact fragmentation of spheres, using a three-dimensional Discrete Element Model (DEM) Carmona et al. (Phys Rev E 77:051302, 2008). This work is focused on studying how single spheres fragment when impacted on a planar vibrating target.

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