We numerically investigate viscoelastic phase separation in polymer solutions under shear using a time-dependent Ginzburg-Landau model. The gross variables in our model are the polymer volume fraction and a conformation tensor. The latter represents chain deformations and relaxes slowly on the rheological time giving rise to a large viscoelastic stress. The polymer and the solvent obey two-flui...

Abstract Fluid–rock interaction has profound effects on the dynamics of lithosphere. This Perspectives article describes catalytic water kinetics mineral reactions and strength rocks in terms coupled dissolution precipitation mechanisms a macro- nano-scale. The length scale coupling between steps depends fluid composition at mineral-fluid interface also differential stress. Stress-induced mass ...

Abstract Several constitutive models for sands are based on an additive split of the effective stress rate into two terms. One term accounts deviatoric ratio $$\varvec{r}$$ r , other mean $${p}$$ p . While sophisticated techniques available to account monotonic and cycl...

Compaction bands are narrow planar zones of localized purely compressive (without shear) deformation that form perpendicular to the most compressive principal stress. Such bands have been observed in high porosity rocks in the laboratory and in the field. Because compaction presumably decreases permeability, these bands can act as barriers to flow within reservoirs. Reexamination of the results...

In this paper, ratcheting behavior of beams subjected to mechanical cyclic loads at elevated temperature, using the rate dependent Chaboche unified viscoplastic model with combined kinematic and isotropic hardening theory of plasticity, is investigated. A precise and general numerical scheme, using the incremental method of solution, is developed to obtain the cyclic inelastic creep and plastic...

An electrode in a lithium-ion battery may undergo inelastic processes of two types: flow and reaction. Flow changes the shape of the electrode, preserves its composition and volume, and is driven by the deviatoric stress — a process similar to the plastic flow of a metal. By contrast, reaction changes the composition and volume of the electrode, and is driven by a combination of the mean stress...