Giovanni Grasselli

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2001 Acknowledgments I am deeply grateful and I would like to express my thanks to: Prof. F. Descoeudres for accepting me into his group at the EPFL and for his interest in the project. Prof. P. Egger for his skillful supervision of the research, for his useful criticism in the development of the project, for his constant patience and great assistance. Dr.(More)
This paper numerically investigates the seismic response of the filled joint under high amplitude stress waves using the combined finite-discrete element method (FDEM). A thin layer of independent polygonal particles are used to simulate the joint fillings. Each particle is meshed using the Delaunay triangulation scheme and can be crushed when the load(More)
The studies of the influences of confining pressure (Pc) on the damage and failure of rocks are valuable for mining activities and hydrocarbon explorations. Often, these activities need geophysical suirveilance and can be monitored by studing the associated seismic energy release (i.e. induced seismicity). For example, in hydraulic fracturing operations,(More)
Rock slope instability phenomena have been often correlated to seismic activity. Therefore, earthquake-induced ground motion should be taken into account when performing slope stability analysis in seismically active areas of the world. In the present study, the combined finite-discrete element (FEM/DEM) numerical method is proposed as a tool to assess(More)
A numerical simulation based on a finite/discrete element approach is used to study the deformation and failure process of standard rock mechanics tests on Opalinus clay samples, when subjected to static loading conditions. The layered structure of the Opalinus clay is considered and the resultant anisotropic behaviour is modelled. Rock heterogeneity is(More)
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