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Stress propagation in a colloidal suspension under shear



William L. George, Pascal Hebraud, Didier Lootens, Mouhamad Khalil, Nicos Martys


The stress propagation in a concentrated attractive colloidal suspension, under shear, is studied using mumerical simulations. A novel way of describing the intercolloidal stress field is proposed and its spatial correlations are studied. An inertia-like tensor is defined in order to characterize the anisotropic nature of the stress field. It is shown that, although the particles remain in a liquid order, the interparticle stress is strongly anisotropic. A transition under flow is observed: at low deformations, the stress propagates along the compression direction of the shear, whereas at high deformations, the stress is organized into layers parallel to the flow direction.
European Physical Journal E


Rheology, Yield Stress, Colloids, Granular Fluids


George, W. , Hebraud, P. , Lootens, D. , Khalil, M. and Martys, N. (2012), Stress propagation in a colloidal suspension under shear, European Physical Journal E (Accessed July 12, 2024)


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Created February 29, 2012, Updated October 12, 2021