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Drumlin Formation: A Rheological Model
Science, 1966Drumlins are formed in a layer of boulder clay separating a glacier from certain types of terrain. Under certain conditions the large particles in the clay form a dilatant system. When flow in the separating layer is interrupted, part of the layer packs into an obstruction and the rest of the material flows around this obstruction, giving it a ...
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Rheological models vs. homogenization
GAMM-Mitteilungen, 2011AbstractWe show that the outcome of the theory of homogenization is at variance with a classical engineering technique, that is widely used for constructing rheological models of mechanical materials (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Rheological models for xanthan gum
Journal of Food Engineering, 1996Abstract The rheological behaviour of xanthan gum was determined at various temperatures (20–100 °C) and concentrations (0·3–1·3%), and was found to be most adequately described by a power-law model. The effect of temperature on the viscosity followed an Arrhenius relationship, whereas the effect of concentration followed an exponential relationship.
Zhang Xuewu +5 more
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2009
Rheology is the science of the deformation and flow of materials. It deals with the theoretical concepts of kinematics, conservation laws and constitutive relations, describing the interrelation between force, deformation and flow. The experimental determination of the rheological behaviour of materials is called rheometry.
Anne M. Robertson +2 more
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Rheology is the science of the deformation and flow of materials. It deals with the theoretical concepts of kinematics, conservation laws and constitutive relations, describing the interrelation between force, deformation and flow. The experimental determination of the rheological behaviour of materials is called rheometry.
Anne M. Robertson +2 more
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Rheological Models of Suspensions
1990Publisher Summary This chapter reviews the existing models of suspensions within a unified framework that aims to bridge parochial disciplinary fragmentation of the suspension theory. The chapter also discusses some specialized subdivisions into which suspension theory has branched.
Plerre M. Adler +2 more
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Rheological models for gypsum plaster pastes
Rheologica Acta, 1988Shear stress and shear rate data obtained for gypsum plaster pastes were correlated by means of different rheological models. The pastes were prepared from a commercial calcium sulfate hemihydrate at various water/plaster ratios ranging from 100/150 to 100/190. The tests were performed at 25°C using a rotating coaxial cylinder viscosimeter.
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Rheological Model of Pore Water
Journal of Rheology, 1985A rheological model of the flow of an aqueous electrolyte solution near a polar interface is presented, which is based on general equations of electrostatics and mechanics of an isotropic inhomogeneous continuum. The main purpose of the theory is to account for the consequences of an additional orientation of water molecules caused by the electrical ...
Israela Ravina, Yigal Gur
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1995
All the complexity of the rheological behaviour of polymeric materials is ultimately rooted in their molecular structure or, in the case of suspensions, blends, block copolymers, or other complex materials, is due to the “structure” of the material at the scale of, say, 1 µm. Thus a valuable alternative to the classical approach to rheology, originally
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All the complexity of the rheological behaviour of polymeric materials is ultimately rooted in their molecular structure or, in the case of suspensions, blends, block copolymers, or other complex materials, is due to the “structure” of the material at the scale of, say, 1 µm. Thus a valuable alternative to the classical approach to rheology, originally
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Rheological and Circuital Models
1994The analysis of mechanical constitutive properties of materials, namely rheology, proceeds through the construction of ideal bodies, named rheological models. These are obtained by means of combinations in series and in parallel of elementary models, which represent the main mechanical properties: elasticity, viscosity, plasticity, strength.
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Rheological models for cement pastes
Materials and Structures, 1988Shear stress and shear rate data obtained for cement pastes were correlated by means of different rheological models. Pastes were prepared from a commercial Portland cement 325 at different water/cement ratios ranging from 0.34 to 0.42. Tests were performed at 25°C using a rotating coaxial cylinder viscometer.
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