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Shear thinning and shear thickening characteristics in electrorheological fluids
Smart Materials and Structures, 2013The electrorheology (ER) of suspensions based on polystyrene/polyaniline (PS/PANI) core/shell structured microspheres and those based on disk-like zeolite particles at different electric fields and particle volume fractions have been studied, respectively.
Jile Jiang +6 more
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Shear-thinning of polydisperse suspensions
Journal of Physics D: Applied Physics, 2008The effects of the polydispersivity of the particle phase on the rheology of suspensions are studied with falling-ball rheometry. The model suspensions consist of large, neutrally buoyant spheres in a viscous Newtonian suspending fluid. The experiments determine the average velocity of the settling particle along the centreline or axis of the ...
P T Reardon +5 more
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Journal of the Structural Division, 1971
The behavior of thin-web girders in shear, when loaded in excess of the buckling value, is studied. The equations and simplified design charts presented take into account the effect of flexural rigidity of the flanges on the strength of the web, stiffeners, and fasteners. The study is directed primarily to aluminum webs, although in theory the concepts
Maurice L. Sharp, John W. Clark
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The behavior of thin-web girders in shear, when loaded in excess of the buckling value, is studied. The equations and simplified design charts presented take into account the effect of flexural rigidity of the flanges on the strength of the web, stiffeners, and fasteners. The study is directed primarily to aluminum webs, although in theory the concepts
Maurice L. Sharp, John W. Clark
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Optimal Control of Shear-Thinning Fluids
SIAM Journal on Control and Optimization, 2012The aim of this paper is to establish necessary optimality conditions for optimal control problems governed by steady, incompressible Navier--Stokes equations with shear-dependent viscosity. The main difficulty is related to the differentiability of the control-to-state mapping and is overcome by introducing a family of smooth approximate control ...
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Shear thinning and shear thickening of concentrated ceramic suspensions
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1998Abstract The steady shear properties of two important ceramic systems, Si3N4 powder, and the composite system SiC whiskers and Al2O3 particles, have been investigated. The concentrated, colloidally stable non-aqueous powder suspensions all displayed a shear thinning behaviour with an approach to a plateau at high shear rates which could be modelled ...
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Shear thinning vs shear thickening in associating fluids
The Journal of Chemical Physics, 1998When one-bond Frenkel dumbbells are allowed to dimerize, as analyzed using the Wertheim theory of association, the resulting fluid exhibits shear thinning or shear thickening behaviors. In contrast, when Gaussian chains undergo shear-assisted association, only shear thickening is possible.
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Shear thinning of colloidal dispersions
Journal of Rheology, 1998In this paper we calculate numerically the shear induced distortion of the equilibrium microstructure in a dilute colloidal suspension. In the low density limit, our predictions both with and without hydrodynamic interactions follow the form of the Ree–Eyring equation for the shear rate dependence of the rheology.
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The shear of thin liquid films
Journal of Physics D: Applied Physics, 1971Optically smooth rubber pressed against glass provides a microconforming contact between which a thin uniform film of liquid can be sandwiched. The contact largely overcomes the problem of asperity interaction between surfaces. The rubber surface could be slid relative to the glass plate under controlled conditions and in this way it proved possible to
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Shear-Thinning and Dilatant Rheologies
1994The rheological properties of crowded suspensions and pastes of powders dispersed in liquids is of fundamental importance to the forming properties of any ceramic article formed by the wet process. This includes such diverse products as brick and tile, whitewares, many refractories, electronic ceramics, and high performance ceramics.
James E. Funk, Dennis R. Dinger
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