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DEM simulation of polyhedral particle cracking using a combined Mohr–Coulomb–Weibull failure criterion

Content Provider	Springer Nature Link
Author	Gladkyy, Anton Kuna, Meinhard
Copyright Year	2017
Abstract	In this work, at first a new failure criterion for breakage of brittle particle systems is proposed, which combines the classical Mohr–Coulomb strength criterion with the probabilistic Weibull concept. This failure criterion is especially applicable to particle systems under compression load and accounts for the size-dependence of the material’s strength. Second, the Discrete Element Method (DEM) is implemented for sharp edged particles of convex polyhedral shape. The Mohr–Coulomb–Weibull criterion is integrated into the running DEM procedure to simulate progressive particle cracking and comminution of particle systems. The feasibility of the model was tested with simple uniaxial and triaxial compressive loading states, and the influence of relevant material parameters was studied. As a first application example of the method, an oedometric experiment was simulated, whereby coarse quartzite particles are compressed in a piston-die press. The results show good qualitative agreement with the experimentally observed particle size distribution. Thus, the ability of the suggested approach has been proved to reproduce important features as the size effect and the influence of stress state.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	19
Issue Number	3
e-ISSN	14347636
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-05-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	DEM Polyhedral particle Failure criterion Mohr–Coulomb–Weibull Particle breakage Soft and Granular Matter, Complex Fluids and Microfluidics Engineering Fluid Dynamics Materials Science Geoengineering, Foundations, Hydraulics Industrial Chemistry/Chemical Engineering Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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