Critical and depositional friction angles are characteristic for the deposition of a granular mass; the wrong angle adoption determines the ineffectiveness of a containment basin. The term is used with different meanings and measured by various procedures. The numerical simulation is a useful tool for the hazard assessment, but the definition of friction needed parameters requires insights on their ...
Some geological phenomena of high pressure shearing show an unusual low friction during rock on rock slipping, like the abnormally long rock avalanches runout (hypermobility) or the slip of faults during earthquakes. The project aims to study the effect of the dynamic fragmentation of rock granules on the motion shear resistance, starting from the consideration that dynamic fragmentation is ubiquitous in geological processes subject to shearing ...
