Access the full text.
Sign up today, get DeepDyve free for 14 days.
R. Marsal (1973)
MECHANICAL PROPERTIES OF ROCKFILL
D. Cantor, É. Azéma, P. Sornay, F. Radjai (2017)
Three-dimensional bonded-cell model for grain fragmentationComputational Particle Mechanics, 4
J. Bono, Glenn McDowell (2014)
DEM of triaxial tests on crushable sandGranular Matter, 16
J. Moreau (1988)
Unilateral Contact and Dry Friction in Finite Freedom Dynamics
Olivier Tsoungui, D. Vallet, J. Charmet, S. Roux (1999)
Size effects in single grain fragmentationGranular Matter, 2
N. Marachi (1969)
Strength and deformation characteristics of rockfill materials
D. Cantor, N. Estrada, É. Azéma (2015)
Split-Cell Method for grain fragmentationComputers and Geotechnics, 67
G. McDowell, M. Bolton (1998)
On the micromechanics of crushable aggregatesGeotechnique, 48
A. Griffith
The Phenomena of Rupture and Flow in SolidsPhilosophical Transactions of the Royal Society A, 221
D. Ratkowsky (1984)
OF WIDE APPLICABILITY
W Weibull (1951)
Wide applicabilityJ. Appl. Mech., 18
A. Casagrande, R. Hirschfeld, S. Poulos, G. Bertram (1973)
Embankment dam engineering;: Casagrande volume
(1999)
Modélisation du comportement hydromécanique des enrochements
J. Eliáš (2014)
Simulation of railway ballast using crushable polyhedral particlesPowder Technology, 264
G. McDowell, A. Amon (2000)
THE APPLICATION OF WEIBULL STATISTICS TO THE FRACTURE OF SOIL PARTICLESSoils and Foundations, 40
G. McDowell, M. Bolton, D. Robertson (1996)
The fractal crushing of granular materialsJournal of The Mechanics and Physics of Solids, 44
C. Ovalle, E. Frossard, C. Dano, Wei Hu, S. Maiolino, P. Hicher (2014)
The effect of size on the strength of coarse rock aggregates and large rockfill samples through experimental dataActa Mechanica, 225
C. Silvani, J. Réthoré, S. Bonelli (2015)
Measuring rockfill deformation by digital image correlation
C Silvani, T Désoyer, S Bonelli (2009)
Discrete modelling of time-dependent rockfill behaviourInt. J. Numer. Anal. Methods in Geomech., 33
Y. Cheng, Y. Nakata, M. Bolton (2003)
Discrete element simulation of crushable soilGeotechnique, 53
M. Tapias, E. Alonso, J. Gili (2015)
A particle model for rockfill behaviourGeotechnique, 65
D. Nguyen, P. Sornay, É. Azéma, F. Radjai (2014)
Evolution of particle size distributions in crushable granular materials
M. Jean (1999)
The non-smooth contact dynamics methodComputer Methods in Applied Mechanics and Engineering, 177
P. Cundall (1988)
FORMULATION OF A THREE-DIMENSIONAL DISTINCT ELEMENT MODEL - PART I. A SCHEME TO DETECT AND REPRESENT CONTACTS IN A SYSTEM COMPOSED OF MANY POLYHEDRAL BLOCKSInternational Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 25
J. Jaeger (1967)
Failure of rocks under tensile conditionsInternational Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 4
E. Frossard, Wei Hu, C. Dano, P. Hicher (2012)
Rockfill shear strength evaluation: a rational method based on size effectsGeotechnique, 62
A. Potapov, C. Campbell (1996)
a Three-Dimensional Simulation of Brittle Solid FractureInternational Journal of Modern Physics C, 07
G McDowell, J Bono (2013)
On the micro mechanics of one-dimensional normal compressionGéotechnique, 63
E. Alonso, M. Tapias, J. Gili (2012)
Scale effects in rockfill behaviourGeotechnique Letters, 2
Olivier Tsoungui, D. Vallet, J. Charmet (1999)
Numerical model of crushing of grains inside two-dimensional granular materialsPowder Technology, 105
E. Alaei, A. Mahboubi (2012)
A discrete model for simulating shear strength and deformation behaviour of rockfill material, considering the particle breakage phenomenonGranular Matter, 14
S. Lobo-guerrero, L. Vallejo (2005)
Crushing a weak granular material: experimental numerical analysesGeotechnique, 55
E Alonso, M Tapias, J Gili (2012)
Scale effects in rockfill behaviourGéotech. Lett., 2
J. Bono, G. McDowell (2014)
Discrete element modelling of one-dimensional compression of cemented sandGranular Matter, 16
(1998)
Fragmentation of grains in a twodimensional packing
O. Ben-Nun, I. Einav (2010)
The role of self-organization during confined comminution of granular materialsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 368
Grain breakage in rockfill in civil engineering structures is the major cause responsible for settlement and collapse. It is inherently due to large grain size and angular shape of the grains. To model these features, a three-dimensional discrete element model of a breakable grain is presented hereafter. The model is able to reproduce grain breakage into rigid irregular fragments with conservation of the mass of the initial grain. Polyhedral shapes are chosen to represent the grains, and are divided into irregular tetrahedral fragments joined together by a cohesive law to enable breakage. This model is implemented in a Non-Smooth Contact Dynamics code. Single grain crushing tests are first conducted to capture the influence of mechanical and geometrical parameters of the model. The intra-granular cohesion defines the grain strength. The grain size and the size and geometrical disposition of subgrains can act in a competitive way, thus contributing to the definition of the grain strength, and in the validation of the scale of effect observed in this type of material: the bigger the grain, the lower its strength. The same grain model is then used to generate multi granular samples subjected to oedometric compression, where grains interact via contact and friction processes, with a uniform initial grain size distribution. The effects of grain breakage are investigated through the analysis on the macroscopic and microscopic scales, with a comparison with unbreakable grains samples. The ability of the model to reproduce physical laboratory tests is confirmed through the simulations.
Granular Matter – Springer Journals
Published: Jun 30, 2017
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.