Paper Title:

Modeling Fracturing in Rock Using a Modified Discrete Element Method with Plasticity

Periodical Key Engineering Materials (Volumes 452 - 453)
Main Theme Advances in Fracture and Damage Mechanics IX
Edited by A. Saimoto and M.H. Aliabadi
Pages 861-864
DOI 10.4028/www.scientific.net/KEM.452-453.861
Citation Haitham Alassi et al., 2010, Key Engineering Materials, 452-453, 861
Online since November 2010
Authors Haitham Alassi, Rune Holt
Keywords Crack Propagation, Discrete Element Method (DEM), Plasticity, Rock Mechanic
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In this contribution we present more developments in the modified discrete element approach (MDEM) which was proposed to model fractures propagation in reservoir rock during production and fluid injection. The new development in this paper includes adding plasticity which allows the material to go into plastic deformation before initiating fractures. Several numerical tests are performed which mimic the real lab tests usually perform on rock samples, this includes direct tension test with initial crack to model crack propagation, and several biaxial compression tests to model the development of shear bands.

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