In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 261-263 ( 2004-4), p. 39-44
Abstract:
A major challenge in rock mechanics has been the realistic modeling that can reveal the progressive accumulation of damage and shear localization in a brittle rock under compression. The Rock Failure Process Analysis code (RFPA 2D ) is an efficient tool and realistic model to simulate such complexities. A key assumption of the code is that the heterogeneity of elastic
moduli and failure strength are characterized by the Weibull distribution with two parameters (m and σ 0 ). However, these two parameters do automatically not relate to the microstructural parameters, such as grain size and microcrack statistics. Therefore, the purpose of this paper is to elucidate the micromechanical basis of these Weibull parameters, specifically how they depend on
microstructural attributes such as grain size and crack statistics. Secondly, a methodology was developed to quantitatively determine the relevant micromechanical parameters for input into the RFPA 2D code. Finally, the methodology was implemented by quantifying the microcrack geometry and statistics of real rock and simulating its uniaxial compression and progressive
failure behavior. The simulated result agrees well with the experimental study.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.261-263
DOI:
10.4028/www.scientific.net/KEM.261-263.39
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2004
detail.hit.zdb_id:
2073306-9
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