Granite rock fragmentation at percussive drilling
2013 (English)In: Rock Dynamics and Applications - State of the Art: Proceedings of the 1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013, Taylor & Francis Group, 2013, 437-442 p.Conference paper (Refereed)
The aim of this study is to numerically model the fracture system at percussive drilling. Due to the complex behavior of rock material, a continuum approach is employed. The KST (Krieg 1978, Swenson & Taylor, 1983) plasticity model is coupled with the DFH (Denoual & Hild 2000, Forquin & Hild 2010) anisotropic damage model. Granite material is investigated and the experiments are performed to characterize the material behavior. The equation of motion is discretized using a FE approach and the explicit time integration method is employed. The problem is modeled in 3D. The fracture mechanism in the rock and the bit penetration-resisting force response are realistically captured by the numerical model.
Place, publisher, year, edition, pages
Taylor & Francis Group, 2013. 437-442 p.
Anisotropic damage model, Equation of motion, Explicit time integration method, Fracture mechanisms, Granite materials, Material behavior, Percussive drilling, Plasticity model
IdentifiersURN: urn:nbn:se:kth:diva-134257ISI: 000342691300052ScopusID: 2-s2.0-84878556638ISBN: 978-113800056-8OAI: oai:DiVA.org:kth-134257DiVA: diva2:666171
1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013; Lausanne; Switzerland; 6 June 2013 through 8 June 2013
QC 201311222013-11-222013-11-202014-11-06Bibliographically approved