scholarly journals Continuum modeling of shear startup in soft glassy materials

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Roberto Benzi ◽  
Thibaut Divoux ◽  
Catherine Barentin ◽  
Sébastien Manneville ◽  
Mauro Sbragaglia ◽  
...  
Keyword(s):  
Continuum Modeling ◽  
Glassy Materials ◽  
Soft Glassy Materials

scholarly journals A multi-component lattice Boltzmann approach to study the causality of plastic events

2020 ◽  
Vol 378 (2175) ◽  
pp. 20190403
Author(s):  
Pinaki Kumar ◽  
Roberto Benzi ◽  
Jeannot Trampert ◽  
Federico Toschi
Keyword(s):  
Yield Stress ◽  
Lattice Boltzmann ◽  
Soft Matter ◽  
Scaling Laws ◽  
System A ◽  
Plastic Event ◽  
Glassy Materials ◽  
Couette Cell ◽  
Soft Glassy Materials ◽  
Concentrated Emulsions

Using a multi-component lattice Boltzmann (LB) model, we perform fluid kinetic simulations of confined and concentrated emulsions. The system presents the phenomenology of soft-glassy materials, including a Herschel–Bulkley rheology, yield stress, ageing and long relaxation time scales. Shearing the emulsion in a Couette cell below the yield stress results in plastic topological re-arrangement events which follow established empirical seismic statistical scaling laws, making this system a good candidate to study the physics of earthquakes. One characteristic of this model is the tendency for events to occur in avalanche clusters, with larger events, triggering subsequent re-arrangements. While seismologists have developed statistical tools to study correlations between events, a process to confirm causality remains elusive. We present here, a modification to our LB model, involving small, fast vibrations applied to individual droplets, effectively a macroscopic forcing, which results in the arrest of the topological plastic re-arrangements. This technique provides an excellent tool for identifying causality in plastic event clusters by examining the evolution of the dynamics after ‘stopping’ an event, and then checking which subsequent events disappear. This article is part of the theme issue ‘Fluid dynamics, soft matter and complex systems: recent results and new methods’.

Rheology of soft glassy materials

2002 ◽  
Vol 59 (5) ◽  
pp. 786-792 ◽  
Author(s):  
D Bonn ◽  
P Coussot ◽  
H. T Huynh ◽  
F Bertrand ◽  
G Debrégeas
Keyword(s):  
Glassy Materials ◽  
Soft Glassy Materials

scholarly journals Herschel-Bulkley rheology from lattice kinetic theory of soft glassy materials

2010 ◽  
Vol 91 (1) ◽  
pp. 14003 ◽  
Author(s):  
R. Benzi ◽  
M. Bernaschi ◽  
M. Sbragaglia ◽  
S. Succi
Keyword(s):  
Kinetic Theory ◽  
Glassy Materials ◽  
Soft Glassy Materials

scholarly journals Rheology of Soft Glassy Materials

1997 ◽  
Vol 78 (10) ◽  
pp. 2020-2023 ◽  
Author(s):  
Peter Sollich ◽  
François Lequeux ◽  
Pascal Hébraud ◽  
Michael E. Cates
Keyword(s):  
Glassy Materials ◽  
Soft Glassy Materials

scholarly journals Linear viscoelasticity of soft glassy materials

Soft Matter ◽  
2014 ◽  
Vol 10 (12) ◽  
pp. 1891 ◽  
Author(s):  
Manish Kaushal ◽  
Yogesh M. Joshi
Keyword(s):  
Linear Viscoelasticity ◽  
Glassy Materials ◽  
Soft Glassy Materials
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