TY - GEN
T1 - Numerical modeling of normal wedge indentation in rocks
AU - Damjanac, Branko
AU - Detournay, Emmanuel M
PY - 1995/1/1
Y1 - 1995/1/1
N2 - This paper deals with the numerical modeling of the problem of wedge indentation into an elasto-plastic half-plane. It focuses on the initial regime of the indentation process (prior to the initiation of a tensile fracture), in which energy is solely dissipated in a diffuse mode. The main issues that need to be addressed in modeling such a problem are first discussed: preservation of self-similarity, accuracy, and computational efficiency. Then, a comparison between numerical and analytical results based on a cavity expansion model is presented. The numerical results are shown to support a major prediction of the cavity expansion model, namely that the indentation process is predominantly controlled by a single number 7, which is a function of the wedge angle, the un confined compressive strength of the rock, and its elastic modulus. Rock Mechanics Daemen & Schultz (eds).
AB - This paper deals with the numerical modeling of the problem of wedge indentation into an elasto-plastic half-plane. It focuses on the initial regime of the indentation process (prior to the initiation of a tensile fracture), in which energy is solely dissipated in a diffuse mode. The main issues that need to be addressed in modeling such a problem are first discussed: preservation of self-similarity, accuracy, and computational efficiency. Then, a comparison between numerical and analytical results based on a cavity expansion model is presented. The numerical results are shown to support a major prediction of the cavity expansion model, namely that the indentation process is predominantly controlled by a single number 7, which is a function of the wedge angle, the un confined compressive strength of the rock, and its elastic modulus. Rock Mechanics Daemen & Schultz (eds).
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M3 - Conference contribution
AN - SCOPUS:69549092907
SN - 9054105526
SN - 9789054105527
T3 - 35th U.S. Symposium on Rock Mechanics, USRMS 1995
SP - 349
EP - 354
BT - 35th U.S. Symposium on Rock Mechanics, USRMS 1995
A2 - Daemen, null
A2 - Schultz, null
PB - American Rock Mechanics Association (ARMA)
T2 - 35th U.S. Symposium on Rock Mechanics, USRMS 1995
Y2 - 5 June 1995 through 7 June 1995
ER -