A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model Pierre Saramito To cite this version: Pierre Saramito. A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model. Journal of Non-Newtonian Fluid Mechanics, Elsevier, 2009, 158 (1-3), pp.154-161. �10.1016/j.jnnfm.2008.12.001�. �hal

The collision of drops in a solid substrate is an interesting problem with several practical applications. When the drop is made of a complex fluid the problem presents numerical challenges due to the interaction of the mechanical properties and the free surface approach. In the present work, we solve the numerical problem of elasto-viscoplastic drops colliding in vertical plane. The free

In this classical model, below the yield stress the material is strictly rigid. Complementing this model by including elastic behavior below the yield stress leads to a description of an elastoviscoplastic (EVP) material such as an emulsion or a liquid foam. We include this modification in a A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model Pierre Saramito To cite this version: Pierre Saramito. A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model. Journal of Non-Newtonian Fluid Mechanics, Elsevier, 2009, 158 (1-3), pp.154-161.

This paper, in terms of previous elasto-. 13 Nov 2018 The gravity-defying trick is called the Weissenberg effect. Instead of being pushed aside by the centrifugal force, the viscoelastic liquid is drawn viscoelastic/viscoplastic models [13-15]. In the first case the viscous effects manifest themselves only in combination with plastic properties after exceeding of yield A numerical and theoretical study of yield-stress fluid flows in two types of model porous media is presented. We focus on viscoplastic and elastoviscoplastic av E Chaparian · 2020 — Elastoviscoplastic fluid, Particle migration, Viscoelastic fluid, Yield-stress fluid, Yield stress, Buoyant rigid sphere, Elasto-viscoplastic, Elasto-viscoplasticity, E. Chaparian et al., "Yield-stress fluids in porous media : a comparison of viscoplastic and elastoviscoplastic flows," Meccanica (Milano. Print), vol.

Yet, the velocity fields in the viscoplastic and elastoviscoplastic flows are comparable for small elastic effects. By increasing the yield stress, the difference in the pressure drops between the

The LAOS test protocols and the associated material measures provide a rheological fingerprint of the yielding behavior of a complex fluid We investigate the radial oscillations of small gas bubbles trapped in yield-stress fluids and driven by an acoustic pressure field. We model the rheological behavior of the yield-stress fluid using the recently developed elastoviscoplastic constitutive equation that takes into account the elastic and viscoplastic deformations of the material [Saramito, J. Non-Newton. 2013-11-12 · of a Viscoplastic Fluid Raazesh Sainudiiny yDepartment of Mathematics and Statistics Viscoplastic ßuids Elastoviscoplastic ßuids Internal microstructure Near β titanium alloys can now compete with quasi-α or α/β titanium alloys for airframe forging applications. The body-centered cubic β-phase can represent up to 40% of the volume.

Viscoplastic and elastoviscoplastic fluids

For elastoviscoplastic materials undergoing LAOS in these geometries, both elastic but flexible model that is popular for use with fluids that exhibit a yield stress. Because the transitions from elastic to viscoplastic behavior d

Various fluids of practical interest, such as liquid foams, droplet emulsions or blood, present such elastoviscoplastic behavior: at low stress, the material behaves as a viscoelastic solid, whereas at stresses above a yield stress, the material behaves as a fluid.

A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model Pierre Saramito To cite this version: Pierre Saramito. A new elastoviscoplastic model based on the Herschel-Bulkley viscoplastic model. Journal of Non-Newtonian Fluid Mechanics, Elsevier, 2009, 158 (1-3), pp.154-161. �10.1016/j.jnnfm.2008.12.001�. �hal Elastoviscoplastic behavior model of electrorheological fluids in various deformation modes E V Korobko1, M A Zhurauski and A A Makhaniok A.V. Luikov Heat and Mass Transfer Institute of NAS Belarus, 220072, 15 P. Brovka str., Minsk, Belarus E-mail: evkorobko@gmail.com Abstract. IntroductionNumerical results of inertialess flows of elasto-viscoplastic fluids inside a lid-driven cavity are presented and discussed.
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The Herschel–Bulkley rheological fluid model includes terms representing viscosity and plasticity. In this classical model, below the yield stress the material is strictly rigid.

An elastic-viscoplastic material with strain hardening is described by equations similar to those for an elastic-viscoplastic material with perfect plasticity. However, in this case the stress depends both on the plastic strain rate and on the plastic strain itself. Viscoplastic ﬂuid Elastoviscoplastic ﬂuid 1 Introduction Non-Newtonian ﬂuid ﬂows in porous media are of great practical importance for numerous industries A constitutive model for structured fluids is presented. Its predictive capability includes thixotropy, viscoelasticity and yielding behavior.
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elasto-viscoplastic instability, which is at variance with elasto-plastic inviscid media. with interstitial fluids, and may suffer degradation and fracture processes

In particular, they behave as solids when the applied stress is below a certain threshold $\unicode[STIX]{x1D70F}_{0}$ , i.e. the yield stress, while for stresses above it, they start to flow as liquids. 2018-02-01 · An analytical study of elastoviscoplastic fluid flow in tubes of non-circular cross section is presented.