A grain based modeling study of mineralogical factors affecting strength, elastic behavior and micro fracture development during compression tests in granites

被引：134
作者：
Hofmann, Hannes [1 ]
Babadagli, Tayfun [1 ]
Yoon, Jeoung Seok [2 ]
Zang, Arno [2 ]
Zimmermann, Guenter [2 ]
机构：
[1] Univ Alberta, Edmonton, AB, Canada
[2] GFZ German Res Ctr Geosci, Potsdam, Germany
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 147卷
关键词：
Discrete element modeling (DEM); Grain based modeling (GBM); Compression tests; Granites; PARTICLE MODEL; DEM SIMULATION; BOUNDARY;
D O I：
10.1016/j.engfracmech.2015.09.008
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The influence of mineral size and distribution, and model discretization on elastic rock properties, rock strength, and types and numbers of micro cracks was studied numerically using a two-dimensional discrete element grain based modeling (GBM) approach. The model was calibrated to unconfined and confined compression tests and Brazilian tensile tests performed on Aue granite. Confined asymmetric compression tests were simulated for the same rock and compared to physical fracture paths. The GBM approach is able to reproduce all major laboratory observations including the correct ratio between compression strength and Brazilian tensile strength that cannot be captured with earlier contact models. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：261 / 275
页数：15
相关论文
共 58 条
  • [1] THE INFLUENCE OF MICROCRACK DENSITY ON THE ELASTIC AND FRACTURE MECHANICAL-PROPERTIES OF STRIPA GRANITE
    ALM, O
    JAKTLUND, LL
    SHAOQUAN, K
    [J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1985, 40 (03) : 161 - 179
  • [2] [Anonymous], 2008, PFC3D PARTICLE FLOW
  • [3] [Anonymous], 2008, PFC2D PART FLOW COD
  • [4] Bahrani N, P 21 CAN ROCK MECH S
  • [5] Bahrani N, P 45 US ROCK MECH S
  • [6] Distinct element method simulation of an analogue for a highly interlocked, non-persistently jointed rockmass
    Bahrani, Navid
    Kaiser, Peter K.
    Valley, Benoit
    [J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2014, 71 : 117 - 130
  • [7] Beugelsdijk L.J.L., 2000, P SPE AS PAC C INT M
  • [8] DEM Simulation of Direct Shear: 2. Grain Boundary and Mineral Grain Strength Component Influence on Shear Rupture
    Bewick, R. P.
    Kaiser, P. K.
    Bawden, W. F.
    [J]. ROCK MECHANICS AND ROCK ENGINEERING, 2014, 47 (05) : 1673 - 1692
  • [9] DEM Simulation of Direct Shear: 1. Rupture Under Constant Normal Stress Boundary Conditions
    Bewick, R. P.
    Kaiser, P. K.
    Bawden, W. F.
    Bahrani, N.
    [J]. ROCK MECHANICS AND ROCK ENGINEERING, 2014, 47 (05) : 1647 - 1671
  • [10] Simulation of heterogeneity, creep, damage and lifetime for loaded brittle rocks
    Chen, Wei
    Konietzky, Heinz
    [J]. TECTONOPHYSICS, 2014, 633 : 164 - 175
123456