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Title of Journal: Rock Mech Rock Eng

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Abbravation: Rock Mechanics and Rock Engineering

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Springer Vienna

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DOI

10.1016/0022-1759(88)90355-9

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ISSN

1434-453X

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An Example of Realistic Modelling of Rock Dynamics

Authors: O K Mahabadi B E Cottrell G Grasselli
Publish Date: 2010/03/28
Volume: 43, Issue: 6, Pages: 707-716
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Abstract

The scope of this study is to numerically simulate the behaviour of Brazilian disc specimens as observed in laboratory during dynamic highstrain rate indirect tensile tests using an innovative combined finitediscrete element method FEM/DEM research code Laboratory experiments using a split Hopkinson pressure bar SHPB apparatus were conducted by the authors and the measured indirect tensile strength values were used to verify the FEM/DEM models In the models the applied boundary conditions related to the loading rate of the specimen were matched with the experimental observations The results of the numerical simulations including tensile strength and failure time are in agreement with the laboratory findings The main failure mechanisms ie tensile splitting along loading axis and shear failure close to loading platens are captured by the numerical model A linear relationship between tensile strength and loading rate is found for the range of dynamic strain rates tested and simulated The simulation results are in good agreement with laboratory observations and demonstrate the potential for using FEM/DEM to realistically model dynamic response of rocksThis work has been supported by NSERC/Discovery Grant No 341275 and NSERC/RTI Grant No 345516 The authors wish to thank Dr Xia and Mr Dai for providing access to their original published data Mr Tatone and Mr Lisjak for the precious help during the preparation of the present manuscript


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Other Papers In This Journal:

  1. Development of Rock Engineering Systems-Based Models for Flyrock Risk Analysis and Prediction of Flyrock Distance in Surface Blasting
  2. Borehole Instability in Malmberget Underground Mine
  3. The Use of Infrared Thermography for Porosity Assessment of Intact Rock
  4. A nonlinear criterion for triaxial strength of inherently anisotropic rocks
  5. Modeling of Shales in Salt-Hydrocarbon Systems
  6. Comprehensive Stability Evaluation of Rock Slope Using the Cloud Model-Based Approach
  7. Wear Performance of Saw Blades in Processing of Granitic Rocks and Development of Models for Wear Estimation
  8. Determination of Poisson’s Ratio of Rock Material by Changing Axial Stress and Unloading Lateral Stress Test
  9. Hollow Cylinder Simulation Experiments of Galleries in Boom Clay Formation
  10. Micromechanical Modelling of Stress Waves in Rock and Rock Fractures
  11. ISRM Suggested Method for Monitoring Rock Displacements Using the Global Positioning System (GPS)
  12. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  13. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  14. Microseism Induced by Transient Release of In Situ Stress During Deep Rock Mass Excavation by Blasting
  15. Some Open Issues on Rockfall Hazard Analysis in Fractured Rock Mass: Problems and Prospects
  16. Connectivity of Three-Dimensional Fracture Networks: A Case Study from a Dam Site in Southwest China
  17. Evaluating Variability and Uncertainty of Geological Strength Index at a Specific Site
  18. Hybrid Finite-Discrete Element Simulation of the EDZ Formation and Mechanical Sealing Process Around a Microtunnel in Opalinus Clay
  19. Experimental Anelastic Strain Recovery Compliance of Three Typical Rocks
  20. Significance of Geological Parameters for Predicting Water Inflow in Hard Rock Tunnels
  21. A Morphological Visualization Method for Removability Analysis of Blocks in Discontinuous Rock Masses
  22. Analysis of the Thermal and Hydraulic Stimulation Program at Raft River, Idaho
  23. Effects of Heat Shock on the Dynamic Tensile Behavior of Granitic Rocks
  24. New Rapid Evaluation for Long-Term Behavior in Deep Geological Repository by Geotechnical Centrifuge. Part 1: Test of Physical Modeling in Near Field Under Isotropic Stress-Constraint Conditions
  25. Slope Failures in the Opencast Coal Mines of Wardha Valley Coalfield in Central India: A Study
  26. System Reliability Assessment for a Rock Tunnel with Multiple Failure Modes
  27. Numerical Assessment of the Progressive Rock Fracture Mechanism of Cracked Chevron Notched Brazilian Disc Specimens
  28. Algorithmic Simulation of Flow in Rock Fractures

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