scholarly journals Stress fluctuations and shear thickening in dense granular suspensions

2020 ◽  
Vol 64 (2) ◽  
pp. 321-328 ◽  
Author(s):  
Qin Xu ◽  
Abhinendra Singh ◽  
Heinrich M. Jaeger
Keyword(s):  
Shear Thickening ◽  
Granular Suspensions

Normal stresses in shear thickening granular suspensions

Soft Matter ◽  
2017 ◽  
Vol 13 (20) ◽  
pp. 3734-3740 ◽  
Author(s):  
Zhongcheng Pan ◽  
Henri de Cagny ◽  
Mehdi Habibi ◽  
Daniel Bonn
Keyword(s):  
Shear Thickening ◽  
Normal Stresses ◽  
Granular Suspensions

scholarly journals Consititutive modeling of time-dependent flows in frictional suspensions

2021 ◽  
Vol 249 ◽  
pp. 01002
Author(s):  
Michael Cates
Keyword(s):  
Normal Force ◽  
Shear Thickening ◽  
Constitutive Modelling ◽  
Contact Forces ◽  
Time Dependent ◽  
Joint Work ◽  
Modelling Framework ◽  
New Concepts ◽  
Quantitative Accuracy ◽  
Granular Suspensions

This paper summarizes recent joint work towards a constitutive modelling framework for dense granular suspensions. The aim is to create a time-dependent, tensorial theory that can implement the physics described in steady state by the Wyart-Cates model. This model of shear thickening suspensions supposes that lubrication films break above a characteristic normal force so that frictional contact forces come into play: the resulting non-sliding constraints can be enough to rigidify a system that would flow freely at lower stresses [1]. Implementing this idea for time-dependent flows requires the introduction of new concepts including a configuration-dependent ‘jamming coordinate’, alongside a decomposition of the velocity gradient tensor into compressive and extensional components which then enter the evolution equation for particle contacts in distinct ways. The resulting approach [2, 3] is qualitatively successful in addressing (i) the collapse of stress during flow reversal in shear flow, and (ii) the ability of transverse oscillatory flows to unjam the system. However there is much work required to refine this approach towards quantitative accuracy, by incorporating more of the physics of contact evolution under flow as determined by close interrogation of particle-based simulations.

scholarly journals Drop formation in shear-thickening granular suspensions

2015 ◽  
Vol 92 (5) ◽  
Author(s):  
Zhongcheng Pan ◽  
Nicolas Louvet ◽  
Yves Hennequin ◽  
Hamid Kellay ◽  
Daniel Bonn
Keyword(s):  
Shear Thickening ◽  
Drop Formation ◽  
Granular Suspensions

scholarly journals Shear thickening in highly viscous granular suspensions

2014 ◽  
Vol 107 (6) ◽  
pp. 68004 ◽  
Author(s):  
Qin Xu ◽  
Sayantan Majumdar ◽  
Eric Brown ◽  
Heinrich M. Jaeger
Keyword(s):  
Shear Thickening ◽  
Granular Suspensions

scholarly journals Shear Thickening and Migration in Granular Suspensions

2010 ◽  
Vol 105 (26) ◽  
Author(s):  
Abdoulaye Fall ◽  
Anaël Lemaître ◽  
François Bertrand ◽  
Daniel Bonn ◽  
Guillaume Ovarlez
Keyword(s):  
Shear Thickening ◽  
Granular Suspensions ◽  
And Migration

Structure of a shear-thickening polysaccharide extracted from the New Zealand black tree fern, Cyathea medullaris

2020 ◽  
Author(s):  
M Wee ◽  
M Mastrangelo ◽  
Susan Carnachan ◽  
Ian Sims ◽  
K Goh
Keyword(s):  
New Zealand ◽  
Uronic Acid ◽  
Average Molecular Weight ◽  
Shear Thickening ◽  
Water Soluble ◽  
Size Exclusion ◽  
Resonance Spectroscopy ◽  
Tree Fern ◽  
13C Nuclear Magnetic Resonance ◽  
Exclusion Chromatography

A shear-thickening water-soluble polysaccharide was purified from mucilage extracted from the fronds of the New Zealand black tree fern (Cyathea medullaris or 'mamaku' in Māori) and its structure characterised. Constituent sugar analysis by three complementary methods, combined with linkage analysis (of carboxyl reduced samples) and 1H and 13C nuclear magnetic resonance spectroscopy (NMR) revealed a glucuronomannan comprising a backbone of 4-linked methylesterified glucopyranosyl uronic acid and 2-linked mannopyranosyl residues, branched at O-3 of 45% and at both O-3 and O-4 of 53% of the mannopyranosyl residues with side chains likely comprising terminal xylopyranosyl, terminal galactopyranosyl, non-methylesterified terminal glucopyranosyl uronic acid and 3-linked glucopyranosyl uronic acid residues. The weight-average molecular weight of the purified polysaccharide was ~1.9×106Da as determined by size-exclusion chromatography coupled with multi-angle laser light scattering (SEC-MALLS). The distinctive rheological properties of this polysaccharide are discussed in relation to its structure. © 2014 Elsevier B.V.

Development of Flexible Extremities Protection utilizing Shear Thickening Fluid/Fabric Composites

2012 ◽  
Author(s):  
Mahesh Hosur ◽  
Norman Wagner ◽  
C. T. Sun ◽  
Vijaya Rangari ◽  
Jack Gillespie ◽  
...  
Keyword(s):  
Shear Thickening ◽  
Shear Thickening Fluid ◽  
Fabric Composites

Research and Applications of Shear Thickening Fluids

2011 ◽  
Vol 4 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Jie Ding ◽  
Weihua Li ◽  
Shirley Z. Shen
Keyword(s):  
Shear Thickening ◽  
Shear Thickening Fluids
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