Calibration and Verification of Two Bonded-Particle Models for Simulation of Intact Rock Behavior
Publication: International Journal of Geomechanics
Volume 17, Issue 4
Abstract
In this study, bonded-particle models were used to simulate the intact rock behavior of Westerly granite. Two three-dimensional models were tested: the enhanced bonded-particle model (EBPM) and the flat-joint contact model (FJCM). To calibrate both models, a new standard procedure was developed. The results of the simulations of the models were compared with the intact rock behavior determined by laboratory tests, including elastic parameters, peak and threshold envelopes, and postpeak behavior. From this study, it can be concluded that the FJCM better represents the mechanical behavior of Westerly granite rock, especially at the low to intermediate confining pressures. Based on this work, it is recommended to use the FJCM to model the behavior of brittle rock at the low to intermediate confining pressures.
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Acknowledgments
This study was financed by FONDECYT Initiation into Research Grant No.11110187.
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Published In
International Journal of Geomechanics
Volume 17 • Issue 4 • April 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 21, 2015
Accepted: Jun 24, 2016
Published online: Sep 13, 2016
Discussion open until: Feb 13, 2017
Published in print: Apr 1, 2017
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