Mathematics – Logic
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29d..13b&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 4, pp. 13-1, CiteID 1054, DOI 10.1029/2001GL013987
Mathematics
Logic
3
Physical Properties Of Rocks: Microstructure, Physical Properties Of Rocks: Fracture And Flow, Structural Geology: Mechanics, Structural Geology: Instruments And Techniques
Scientific paper
Understanding the mechanical behavior of rock is critical for researchers and decision-makers in fields from petroleum recovery to hazardous waste disposal. Traditional continuum-based numerical models are hampered by inadequate constitutive relationships governing fracture initiation and growth. To overcome limits associated with continuum models we employed a discrete model based on the fundamental laws of contact physics to calibrate triaxial tests. Results from simulations of triaxial compression tests on a suite of sedimentary rocks indicate that the basic physics of rock behavior are clearly captured. Evidence for this conclusion lie in the fact that one set of model parameters describes rock behavior at many confining pressures. The use of both inelastic and elastic parameters for comparison yields insight concerning the uniqueness of these models. These tests will facilitate development and calibration of larger scale discrete element models, which may be applied to a wide range of geological problems.
Boutt David F.
McPherson Brian J. O. L.
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