Constitutive modelling of phase transitions in granular soils

The use of numerical codes for simulating the propagation phase fast landslides requires definition constitutive relationships suitable description mechanical behaviour granular soils, under both solid and fluid conditions. In this paper, authors briefly illustrate a modelling approach interpreting material as bi-phasic continuum, according to which may behave like solid, quasi-static conditions, fluid, collisional/dynamic model presented seems satisfactorily reproduce series results obtained by using discrete element code on mono polydisperse specimens. has been implemented in Material Point Method solve boundary value problems, strain rate large values are expected influence response.