Deformations of the colder regions lithosphere mainly occur in frictional regime. In geodynamic models, plastic deformations are often highly localized (shear bands) and used as proxies for faults. However, capturing generation evolution shear bands models is troublesome. Indeed, mesh dependency lack convergence affect, to some extent, results models. Here we extend most common plasticity imple...

As a cylinder spins in an infinite media, viscous shear forces induce fluid motion and circular streamlines are generated. For Newtonian fluids, a simple analytical solution is possible and widely known. The hydrodynamics of nonNewtonian fluids, however, can be quite complex under such conditions. This paper investigates the behavior of a wide range of non-Newtonian fluids in the infinite cylin...

Dynamic fracture in a wide class of materials reveals a "fracture energy" Gamma much larger than the expected nominal surface energy due to the formation of two fresh surfaces. Moreover, the fracture energy depends on the crack velocity, Gamma=Gamma(upsilon). We show that a simple dynamical theory of viscoplasticity coupled to asymptotic pure linear elasticity provides a possible explanation to...

A coupling between phase transformation and viscoplasticity is observed in HTSMAs during actuation. The dislocations generated retained phases accumulated are responsible for the coupling. It results functional fatigue, which reflected as an alteration properties of alloy, increase irrecoverable deformations. objective present study was to develop a theoretical framework account interactions si...