Rock cutting is at the core of all construction on rocks or into rocks. The cutting action, by its nature, is defined by causing failure in a rock so that part of the rock can be removed. From a mechanical point of view, the problem is a difficult one. A numerical solution is often the only credible approach. In this study, we employed both the finite element method and the discrete element method for modeling rock cutting. Our immediate goals were to develop a framework within the two methods so that a laboratory rock scratch test could be well modeled. The reasons for the focus were twofold: first, a scratch test possessed all essential characteristics of a general rock cutting problem; second, there were test data available for validation. We used LS-DYNA for the finite element analysis, PFC2D and PFC3D for the discrete element analysis. Model setup and problems analyzed with each method are presented first, followed by a general discussion.
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Numerical Modeling of Rock Cutting
J. A. Mendoza;
M. C. Jaime;
I. K. Gamwo;
Paper presented at the 12th ISRM Congress, Beijing, China, October 2011.
Paper Number: ISRM-12CONGRESS-2011-072
Published: October 16 2011
Lin, J.-S., Mendoza, J. A., Jaime, M. C., Zhou, Y., Brown, J. , Gamwo, I. K. , and W. Zhang. "Numerical Modeling of Rock Cutting." Paper presented at the 12th ISRM Congress, Beijing, China, October 2011.
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