The paper deals with a numerical analysis of rock cutting experiments using the discrete element method. The main objective of this research is to establish if the occurence of the two failure modes observed in rock cutting experiments (ductile at small depth of cut, brittle at large depth) can be duplicated in numerical simulation. The numerical analysis is carried out with the discrete element code PFC2D which models solids as a collection of bonded disks. Scaling laws are first established between the micro-properties at the particle scale (such as the mean particle radius, and bond strengths) and the apparent material properties at the macroscopic scale (such as the compressive strength σc and the toughness KIC). Cutting tests are then performed with a particle assembly of rock-like properties.
|Original language||English (US)|
|Title of host publication||Vail Rocks 1999 - 37th U.S. Symposium on Rock Mechanics (USRMS)|
|Editors||Kranz, Smeallie, Scott, Amadei|
|Publisher||American Rock Mechanics Association (ARMA)|
|Number of pages||8|
|ISBN (Print)||9058090523, 9789058090522|
|State||Published - 1999|
|Event||37th U.S. Symposium on Rock Mechanics, Vail Rocks 1999 - Vail, United States|
Duration: Jun 7 1999 → Jun 9 1999
|Name||Vail Rocks 1999 - 37th U.S. Symposium on Rock Mechanics (USRMS)|
|Other||37th U.S. Symposium on Rock Mechanics, Vail Rocks 1999|
|Period||6/7/99 → 6/9/99|
Bibliographical noteFunding Information:
The research is supported by grant NSF/CMS-9612035 from National Science Foundation and a Doctoral Dissertation Fellowship from the UMN. The simulations have been performed using the code PFC2D, on loan from Itasca Consulting Group for the purpose of this study. These supports are gratefully acknowledged. The authors also thank Drs. B. Damjanac, A. Drescher, and D. Potyondy for the benefit of Valuable discussions.
9612035 from National Science Foundation and a Doctoral DissertationF ellowshipf rom the UMN. The simulationsh ave been performed using the codeP FC-ø, onl oanf romI tascaC onsultinGg roup for the purposeo f this study. These supportsa re gratefullya cknowledgedT.h e authorsa lsot hank Drs. B. Damjanac,A . Dreschera, nd D. Potyondy for the benefit of valuable discussions.