Evidence for three-dimensional unstable flows in shear-banding wormlike micelles

2007 ◽  
Vol 76 (1) ◽  
Author(s):  
Lydiane Bécu ◽  
Domitille Anache ◽  
Sébastien Manneville ◽  
Annie Colin
Keyword(s):  
Shear Banding ◽  
Three Dimensional ◽  
Wormlike Micelles

Numerical Study of Impact Penetration Shearing Employing Finite Strain Viscoplasticity Model Incorporating Adiabatic Shear Banding

2008 ◽  
Vol 131 (1) ◽  
Author(s):  
Patrice Longère ◽  
André Dragon ◽  
Xavier Deprince
Keyword(s):  
Damage Mechanics ◽  
Numerical Study ◽  
Shear Banding ◽  
Three Dimensional ◽  
Adiabatic Shear ◽  
Deformation Model ◽  
Viscoplastic Material ◽  
Predictive Tool ◽  
Adiabatic Shear Banding ◽  
Wide Range

This work brings forward a twofold contribution relevant to the adiabatic shear banding (ASB) process as a part of dynamic plasticity of high-strength metallic materials. The first contribution is a reassessment of a three-dimensional finite deformation model starting from a specific scale postulate and devoted to cover a wide range of dissipative phenomena, including ASB-related material instabilities (strong softening prefailure stage). The model, particularly destined to deal with impacted structures was first detailed by (Longère et al. 2003, “Modelling Adiabatic Shear Banding Via Damage Mechanics Approach,” Arch. Mech., 55, pp. 3–38; 2005, “Adiabatic Shear Banding Induced Degradation in a Thermo-Elastic/Viscoplastic Material Under Dynamic Loading,” Int. J. Impact Eng., 32, pp. 285–320). The second novel contribution concerns numerical solution of a genuine ballistic penetration problem employing the above model for a target plate material. The ASB trajectories are shown to follow a multistage history and complex distribution pattern leading finally to plugging failure mechanism. The corresponding analysis and related parametric study are intended to put to the test the pertinency of the model as an advanced predictive tool for complex shock related problems.

Shear-banding in wormlike micelles: Beware of elastic instabilities

2016 ◽  
Vol 60 (5) ◽  
pp. 917-926 ◽  
Author(s):  
Marc-Antoine Fardin ◽  
Laura Casanellas ◽  
Brice Saint-Michel ◽  
Sébastien Manneville ◽  
Sandra Lerouge
Keyword(s):  
Shear Banding ◽  
Wormlike Micelles ◽  
Elastic Instabilities

scholarly journals Inertio-elastic instability of non shear-banding wormlike micelles

Soft Matter ◽  
2014 ◽  
Vol 10 (10) ◽  
pp. 1450 ◽  
Author(s):  
Christophe Perge ◽  
Marc-Antoine Fardin ◽  
Sébastien Manneville
Keyword(s):  
Shear Banding ◽  
Wormlike Micelles ◽  
Elastic Instability

Shear Banding Fluctuations and Nematic Order in Wormlike Micelles

2004 ◽  
Vol 93 (26) ◽  
Author(s):  
M. R. López-González ◽  
W. M. Holmes ◽  
P. T. Callaghan ◽  
P. J. Photinos
Keyword(s):  
Shear Banding ◽  
Wormlike Micelles ◽  
Nematic Order

Rheology and spatially resolved structure of cetyltrimethylammonium bromide wormlike micelles through the shear banding transition

2009 ◽  
Vol 53 (3) ◽  
pp. 727-756 ◽  
Author(s):  
Matthew E. Helgeson ◽  
Paula A. Vasquez ◽  
Eric W. Kaler ◽  
Norman J. Wagner
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Shear Banding ◽  
Wormlike Micelles ◽  
Spatially Resolved

Numerical Analysis of Three-Dimensional Flows of Wormlike Micelles Solutions Through Abrupt Contraction Using a Modified Bautista-Manero Model

2011 ◽  
Author(s):  
Takehiro Yamamoto
Keyword(s):  
Structural Change ◽  
Cross Section ◽  
Numerical Scheme ◽  
Three Dimensional ◽  
Wormlike Micelles ◽  
Orientation Behavior ◽  
Shear Deformations ◽  
Limited Region ◽  
Abrupt Contraction ◽  
Volume Method

Startup flows of wormlike micelles solutions in a three-dimensional rectangular abrupt contraction channel are numerically simulated using a modified Bautista-Manero model as a constitutive equation. The numerical scheme applied is based on the finite volume method with the PISO algorithm, and the DEVSS method is employed to stabilize the numerical computation. Temporal changes in micelle network structures are investigated based on the analysis of the fluidity, which represents the structural change in micelle networks. The numerical results indicate that the orientation behavior of micelle networks around the entrance to the contraction remarkably changes with time. Around the entrance, micelle networks undergo strong elongation and shear deformations and hence the deformation of network is accelerated. Furthermore, the velocity distribution in a cross section takes a plug-like profile similarly to that of viscoplastic fluids because the fluidity rapidly changes near channel walls, where the shear rate is high. Three-dimensional patterns in the distribution of the fluidity appear more remarkably at high Weissenberg numbers, while in a conduit downstream of a contraction part they appears in a limited region near the walls where the fluidity rapidly changes.

scholarly journals Inhomogeneous Flow of Wormlike Micelles: Predictions of the Generalized BMP Model with Normal Stresses

Fluids ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 45 ◽  
Author(s):  
J. García-Sandoval ◽  
Fernando Bautista ◽  
Jorge Puig ◽  
Octavio Manero
Keyword(s):  
Structural Parameters ◽  
Shear Banding ◽  
Irreversible Thermodynamics ◽  
Wormlike Micelles ◽  
Simple Shear Flow ◽  
Normal Stresses ◽  
Micellar Solutions ◽  
Concentration Gradients ◽  
Inhomogeneous Flow ◽  
And Diffusion

In this work, we examine the shear-banding flow in polymer-like micellar solutions with the generalized Bautista-Manero-Puig (BMP) model. The couplings between flow, structural parameters, and diffusion naturally arise in this model, derived from the extended irreversible thermodynamics (EIT) formalism. Full tensorial expressions derived from the constitutive equations of the model, in addition to the conservation equations, apply for the case of simple shear flow, in which gradients of the parameter representing the structure of the system and concentration vary in the velocity gradient direction. The model predicts shear-banding, concentration gradients, and jumps in the normal stresses across the interface in shear-banding flows.

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