A direct fragmentation method with Weibull function distribution of sizes based on finite- and discrete element simulations
File(s)
Accepted version
Author(s)
Paluszny, A
Tang, XH
Nejati, M
Zimmerman, RW
Type
Journal Article
Abstract
A direct method is proposed to rapidly fragment bodies during impulse-based discrete element method simulations of multiple body interactions. The approach makes use of patterns and size distributions obtained both from experiments, and from numerical models that rigorously compute fragmentation by growing fractures explicitly. Weibull parameters approximate the fragment size distributions as a function of body size and relative contact velocity. Structured domain decomposition is applied on the colliding bodies directly, resulting in a low-cost fragmentation calculation that depends on relative velocity, but which does not require the computation of fracture growth nor explicit element de-bonding, but instead classifies pre-existing mesh elements into the newly fragmented sub-domains. The method is applied to the fragmentation of a single spherical rock fragment, to an irregularly shaped rock fragment, and to the crushing of an array of spherical rock fragments.
Date Issued
2016-02-01
Date Acceptance
2015-10-17
Citation
International Journal of Solids and Structures, 2016, 80 (1), pp.38-51
ISSN
0020-7683
Publisher
Elsevier
Start Page
38
End Page
51
Journal / Book Title
International Journal of Solids and Structures
Volume
80
Issue
1
Copyright Statement
© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.sciencedirect.com/science/article/pii/S0020768315004357?via%3Dihub
Subjects
Science & Technology
Technology
Mechanics
Discrete element method
Fragmentation
Weibull distribution
Fracture pattern
Finite element
Impulse
IMPACT BREAKAGE
PARTICLE FRAGMENTATION
NUMERICAL SIMULATIONS
DYNAMIC FRAGMENTATION
BRITTLE SPHERES
FRACTURE
FAILURE
SINGLE
MODEL
COMPRESSION
09 Engineering
Mechanical Engineering & Transports
Publication Status
Published
Date Publish Online
2015-10-26