Modeling the influence of particle morphology on the fracture behavior of silica sand using a 3D discrete element method

Mehmet B. Cil; Khalid A. Alshibli

doi:10.1016/j.crme.2014.11.004

Modeling the influence of particle morphology on the fracture behavior of silica sand using a 3D discrete element method

Mehmet B. Cil ¹ ; Khalid A. Alshibli ¹

¹ Dept. of Civil & Env. Engineering, University of Tennessee, 325 John Tickle Building, Knoxville, TN 37996, USA

Comptes Rendus. Mécanique, Volume 343 (2015) no. 2, pp. 133-142.

Résumé

The constitutive behavior and deformation characteristics of uncemented granular materials are to a large extent derived from the fabric or geometry of the particle structure and the interparticle friction resulting from normal forces acting on particles or groups of particles. Granular materials consist of discrete particles with a fabric (microstructure) that changes under loading. Synchrotron micro-computed tomography (SMT) has emerged as a powerful non-destructive 3D scanning technique to study geomaterials. In this paper, SMT was used to acquire in situ scans of the oedometry test of a column of three silica sand particles. The sand is known as ASTM 20–30 Ottawa sand, and has a grain size between US sieves #20 (0.841 mm) and #30 (0.595 mm). The characteristics and evolution of particle fracture in sand were examined using SMT images, and a 3D discrete element method (DEM) was used to model the fracture behavior of sand particles. It adopts the bonded particle model to generate a crushable agglomerate that consists of a large number of small spherical sub-particles. The agglomerate shape matches the 3D physical shape of the tested sand particles by mapping the particle morphology from the SMT images. The paper investigates and discusses the influence of agglomerate packing (i.e., the number and size distribution of spherical sub-particles that constitute the agglomerate) and agglomerate shape on the fracture behavior of crushable particles.

Reçu le : 2014-02-13
Accepté le : 2014-08-26
Publié le : 2014-12-24

DOI : 10.1016/j.crme.2014.11.004

Mots clés : Computed tomography, Fracture, Granular materials, DEM, Sand

Affiliations des auteurs :

Mehmet B. Cil ¹ ; Khalid A. Alshibli ¹

¹ Dept. of Civil & Env. Engineering, University of Tennessee, 325 John Tickle Building, Knoxville, TN 37996, USA

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     author = {Mehmet B. Cil and Khalid A. Alshibli},
     title = {Modeling the influence of particle morphology on the fracture behavior of silica sand using a {3D} discrete element method},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {133--142},
     publisher = {Elsevier},
     volume = {343},
     number = {2},
     year = {2015},
     doi = {10.1016/j.crme.2014.11.004},
     language = {en},
}

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Mehmet B. Cil; Khalid A. Alshibli. Modeling the influence of particle morphology on the fracture behavior of silica sand using a 3D discrete element method. Comptes Rendus. Mécanique, Volume 343 (2015) no. 2, pp. 133-142. doi : 10.1016/j.crme.2014.11.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2014.11.004/

Bibliographie
Cité par

[1] F.N. Altuhafi; M.R. Coop Changes to particle characteristics associated with the compression of sands, Geotechnique, Volume 61 (2011) no. 6, pp. 459-471 | DOI

[2] M.D. Bolton; Y. Nakata; Y.P. Cheng Micro- and macro-mechanical behaviour of DEM crushable materials, Geotechnique, Volume 58 (2008) no. 6, pp. 471-480 | DOI

[3] I. Cavarretta; C. O'Sullivan The mechanics of rigid irregular particles subject to uniaxial compression, Geotechnique, Volume 62 (2012) no. 8, pp. 681-692 | DOI

[4] S. Lobo-Guerrero; L.E. Vallejo DEM analysis of crushing around driven piles in granular materials, Geotechnique, Volume 55 (2005) no. 8, pp. 617-623 | DOI

[5] G.R. McDowell; O. Harireche Discrete element modelling of yielding and normal compression of sand, Geotechnique, Volume 52 (2002) no. 4, pp. 299-304 | DOI

[6] Y.P. Cheng; Y. Nakata; M.D. Bolton Discrete element simulation of crushable soil, Geotechnique, Volume 53 (2003) no. 7, pp. 633-641

[7] Y.P. Cheng; M.D. Bolton; Y. Nakata Crushing and plastic deformation of soils simulated using DEM, Geotechnique, Volume 54 (2004) no. 2, pp. 131-141 | DOI

[8] M.B. Cil; K.A. Alshibli 3D assessment of fracture of sand particles using discrete element method, Geotech. Lett., Volume 2 ( July–September 2012 ), pp. 161-166

[9] M.B. Cil; K. Alshibli Modeling of sand particle fracture using discrete element method and synchrotron micro-tomography images, GSP 234, Atlanta, GA, USA, ASCE (2014), pp. 2822-2829

[10] D.O. Potyondy; P.A. Cundall A bonded-particle model for rock, Int. J. Rock Mech. Min. Sci., Volume 41 (2004) no. 8, pp. 1329-1364 | DOI

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