Publications

Lisjak, A., Mahabadi, O. K., He, L., Tatone, B. S. A., Kaifosh, P., Haque, S. A., & Grasselli, G. (2018). Acceleration of a 2D/3D finite-discrete element code for geomechanical simulations using General Purpose GPU computing. Computers and Geotechnics, 100, 84–96.Scopus.

Lisjak, A., Kaifosh, P., He, L., Tatone, B. S. A., Mahabadi, O. K., & Grasselli, G. (2017). A 2D, fully-coupled, hydro-mechanical, FDEM formulation for modelling fracturing processes in discontinuous, porous rock masses. Computers and Geotechnics, 81, 1–18.Scopus.

Alcolea, A., Kuhlmann, U., Marschall, P., Lisjak, A., Grasselli, G., Mahabadi, O. K., de La Vaissière, R., et al. (2017). A pragmatic approach to abstract the excavation damaged zone around tunnels of a geological radioactive waste repository: application to the HG-A experiment in Mont Terri. Geological Society, London, Special Publications, 443(1), 127–147.Scopus.

Mahabadi, O. K., Lisjak, A., He, L., Tatone, B. S. A., Kaifosh, P., & Grasselli, G. (2016). Development of a new fully-parallel finite-discrete element code: Irazu. 50th U.S. Rock Mechanics / Geomechanics Symposium 2016 (Vol. 4, pp. 2695–2703). Presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, Houston, Texas: American Rock Mechanics Association (ARMA).Scopus.

Lisjak, A., Tatone, B. S. A., Kaifosh, P., He, L., Mahabadi, O. K., & Grasselli, G. (2016). Development of a fully-coupled, hydro-mechanical model for finite-discrete element simulations of fluid-driven fracturing. 50th U.S. Rock Mechanics / Geomechanics Symposium 2016 (Vol. 1, pp. 818–828). Presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, Houston, Texas: American Rock Mechanics Association (ARMA).Scopus.

Lisjak, A., Tatone, B. S. A., Mahabadi, O. K., Grasselli, G., Vietor, T., & Marschall, P. (2015). Simulating the mechanical re-compaction of the EDZ in an indurated claystone (Opalinus clay). ISRM Regional Symposium, EUROCK 2015 (pp. 639–644). Presented at the ISRM Regional Symposium-EUROCK 2015, Salzburg, Austria: International Society for Rock Mechanics.Scopus.

Ha, J., Lisjak, A., & Grasselli, G. (2015). FDEM modelling of thermo-mechanical wellbore instabilities within shale formations. 49th U.S. Rock Mechanics / Geomechanics Symposium 2015 (Vol. 3, pp. 1762–1769). Presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, California: American Rock Mechanics Association (ARMA).Scopus.

Lisjak, A., Mahabadi, O. K., Grasselli, G., Marschall, P., Müller, H. R., Garitte, B., & Vietor, T. (2015). The excavation damaged zone in Clay Shales: New rock mechanics insights from discontinuum numerical modelling. In Hassani, Hadjigeorgiou, & Archibald (Eds.), 13th ISRM International Congress of Rock Mechanics (Vol. 2015-MAY, pp. 1–10). Presented at the 13th ISRM International Congress of Rock Mechanics 2015, Montreal, Canada: International Society for Rock Mechanics.Scopus.

Ha, J., Lisjak, A., & Grasselli, G. (2015). FDEM Modelling of Thermal Wellbore Instabilities within Shale Formations. Presented at the Geoconvention 2015, Calgary.

Lisjak, A., Garitte, B., Grasselli, G., Müller, H. R., & Vietor, T. (2015). The excavation of a circular tunnel in a bedded argillaceous rock (Opalinus Clay): Short-term rock mass response and FDEM numerical analysis. Tunnelling and Underground Space Technology, 45, 227–248.Scopus.

Lisjak, A., Tatone, B. S. A., Mahabadi, O. K., Grasselli, G., Marschall, P., Lanyon, G. W., Vaissière, R. de la, et al. (2015). Hybrid Finite-Discrete Element Simulation of the EDZ Formation and Mechanical Sealing Process Around a Microtunnel in Opalinus Clay. Rock Mechanics and Rock Engineering, 49(5), 1849–1873.Scopus.

Zhao, Q., Tisato, N., Grasselli, G., Mahabadi, O. K., Lisjak, A., & Liu, Q. (2015). Influence ofin situstress variations on acoustic emissions: a numerical study. Geophysical Journal International, 203(2), 1246–1252.

Lisjak, A., Mahabadi, O. K., Kaifosh, P., Vietor, T., & Grasselli, G. (2014). A preliminary evaluation of an enhanced FDEM code as a tool to simulate hydraulic fracturing in jointed rock masses. In N. Colegio Oficial de Ingenieros de Minas del, P. Deputacion de, Geobrugg, Sibelco, & et al. (Eds.), Rock Engineering and Rock Mechanics: Structures in and on Rock Masses - Proceedings of EUROCK 2014, ISRM European Regional Symposium (pp. 1427–1432). Presented at the 2014 ISRM European Regional Symposium on Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, EUROCK 2014, Vigo, Spain: Taylor and Francis - Balkema.Scopus.

Lisjak, A. (2014). Investigating the Influence of Mechanical anisotropy on the Fracturing Behaviour of Brittle Clay Shales with Application to Deep Geological Repositories (PhD Thesis). University of Toronto.

Lisjak, A., Figi, D., & Grasselli, G. (2014). Fracture development around deep underground excavations: Insights from FDEM modelling. Journal of Rock Mechanics and Geotechnical Engineering, 6(6), 493–505.Scopus.

Lisjak, A., & Grasselli, G. (2014). A review of discrete modeling techniques for fracturing processes in discontinuous rock masses. Journal of Rock Mechanics and Geotechnical Engineering, 6(4), 301–314.Scopus.

Lisjak, A., Grasselli, G., & Vietor, T. (2014). Continuum–discontinuum analysis of failure mechanisms around unsupported circular excavations in anisotropic clay shales. International Journal of Rock Mechanics and Mining Sciences, 65, 96–115.

Grasselli, G., Lisjak, A., Mahabadi, O. K., & Tatone, B. S. A. (2014). Influence of pre-existing discontinuities and bedding planes on hydraulic fracturing initiation. European Journal of Environmental and Civil Engineering, 19(5), 580–597.Scopus.

Lisjak, A., Liu, Q., Zhao, Q., Mahabadi, O. K., & Grasselli, G. (2014). Erratum: Numerical simulation of acoustic emission in brittle rocks by two-dimensional finite-discrete element analysis. Geophysical Journal International, 196(2), 1263–1263.Scopus.

Zhao, Q., Lisjak, A., Mahabadi, O. K., Liu, Q., & Grasselli, G. (2014). Numerical simulation of hydraulic fracturing and associated microseismicity using finite-discrete element method. Journal of Rock Mechanics and Geotechnical Engineering, 6(6), 574–581.

Grasselli, G., Lisjak, A., & Vietor, T. (2013). Bringing FDEM to practice - Study of failure mechanisms that contributeto the development of the damaged area around excavations in layered rock formations. Presented at the 6th International Conference on Discrete Element Methods, Golden, Colorado.

Grasselli, G., Zhao, Q., Lisjak, A., & Liu, Q. (2013). Numerical simulation of acoustic emission in rocks using FEM/DEM. Presented at the 1st International Conference on Rock Dynamics and Applications, Lausanne, Switzerland.

Lisjak, A., Liu, Q., Zhao, Q., Mahabadi, O. K., & Grasselli, G. (2013). Numerical simulation of acoustic emission in brittle rocks by two-dimensional finite-discrete element analysis. Geophysical Journal International, 195(1), 423–443.

Grasselli, G., Zhao, Q., Lisjak, A., & Liu, Q. (2013). Numerical simulation of acoustic emission in rocks using FEM/DEM. Rock Dynamics and Applications - State of the Art (pp. 149–159). CRC Press.Scopus.

Grasselli, G., Lisjak, A., Tatone, B. S. A., & Mahabadi, O. K. (2012). Numerical study of the influence of pre-existing features on the hydraulic fracturing process using FEM/DEM. Presented at the ALERT Workshop – “Geomechanics for energy production,” grasselli2012numerical.

Lisjak, A., Tatone, B. S. A., Grasselli, G., & Vietor, T. (2012). Modeling of the strength and deformation anisotropy of an argillaceous rock (Opalinus clay) at the laboratory-scale. Presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, Chicago, IL: American Rock Mechanics Association.

Lisjak, A., Tatone, B. S. A., Mahabadi, O. K., & Grasselli, G. (2012). Block caving modelling using the Y-Geo hybrid finite-discrete element code. Presented at the 6th International Conference and Exhibition on Mass Mining (MassMin 2012), Sudbury, Canada.

Lisjak, A., Tatone, B. S. A., Grasselli, G., & Vietor, T. (2012). Combined finite-discrete element modelling of the influence of bedding planes on the mechanical behaviour of Opalinus Clay. Presented at the RockEng12, Edmonton, Canada.

Lisjak, A., Tatone, B. S. A., Grasselli, G., & Vietor, T. (2012). Micro-mechanical modeling of the strength and deformation anisotropy of Opalinus Clay. Presented at the TIMODAZ Workshop, Mont Terri Rock Laboratory, Saint-Ursanne, Switzerland.

Mahabadi, O. K., Lisjak, A., Munjiza, A., & Grasselli, G. (2012). Y-Geo: New Combined Finite-Discrete Element Numerical Code for Geomechanical Applications. International Journal of Geomechanics, 12(6), 676–688.

Lisjak, A., Tatone, B. S. A., Grasselli, G., & Vietor, T. (2012). Numerical Modelling of the Anisotropic Mechanical Behaviour of Opalinus Clay at the Laboratory-Scale Using FEM/DEM. Rock Mechanics and Rock Engineering, 47(1), 187–206.

Grasselli, G., Lisjak, A., Mahabadi, O. K., & Tatone, B. S. A. (2011). Slope stability analysis using a hybrid Finite-Discrete Element method code (FEMDEM). Presented at the 12th ISRM Congress, Beijing, China: International Society for Rock Mechanics and Rock Engineering.

Lisjak, A., & Grasselli, G. (2011). Numerical modeling of failure around a circular excavation using a hybrid finite-discrete element method code (FEM-DEM). Presented at the XXIV Convegno Nazionale di Geotecnica, Napoli, Italy.

Manzella, I., Lisjak, A., Mahabadi, O. K., & Grasselli, G. (2011). Influence of initial block packing on rock avalanche flow and emplacement mechanisms through FEM/DEM simulations. Pan-Am Canadian Geotechnical Society Geotechnical Conference.

Tatone, B. S. A., Lisjak, A., Mahabadi, O. K., Grasselli, G., & Donnelly, C. (2010). Evaluation of the combined finite element-discrete element method for the assessment of gravity dam stability (Vol. 1509). Presented at the 2010 Canadian Dam Association Conference, Niagara Falls, Ontario, Canada.

Mahabadi, O. K., Lisjak, A., Grasselli, G., Lukas, T., & Munjza, A. (2010). Numerical modelling of a triaxial test of homogeneous rocks using the combined finite-discrete element method (pp. 173–176). Presented at the ISRM International Symposium-EUROCK 2010, Lausanne, Switzerland: International Society for Rock Mechanics and Rock Engineering.