English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We introduce a class of continuum mechanical models aimed at describing thebehavior of viscoelastic fluids by incorporating concepts originated in thetheory of solid plasticity. Within this class, even a simple model withconstant material parameters is able to qualitatively reproduce a number ofexperimental observations in both simple shear and extensional flows, includinglinear viscoelastic properties, the rate dependence of steady-state materialfunctions, the stress overshoot in incipient shear flows, and the difference inshear and extensional rheological curves. Furthermore, by allowing therelaxation time of the model to depend on the total strain, we can reproducesome experimental observations of the non-attainability of steady flows inuniaxial extension, and link this to a concept of polymeric jamming oreffective solidification. Remarkably, this modelling framework helps inunderstanding the interplay between different mechanisms that may compete indetermining the rheology of non-Newtonian materials.

Evolution of local relaxed states and the modelling of viscoelastic fluids