000014694 001__ 14694
000014694 005__ 20161115100159.0
000014694 04107 $$aeng
000014694 046__ $$k2016-08-21
000014694 100__ $$aSwan, James
000014694 24500 $$aElasto-hydrodynamic Network Analysis of Colloidal Gels

000014694 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014694 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014694 506__ $$arestricted
000014694 520__ $$2eng$$aWe investigate the spectrum of relaxation times and relaxation normal modes in percolated colloidal networks. The relaxation spectrum is intimately tied to the linear viscoelasticity of such networks, and the spatial heterogeneity of the normal modes describes how susceptible structures of different length scales are to deformation. We show that these quantities are highly sensitive to hydrodynamic forces exerted on the network. Models for the hydrodynamic forces that neglect hydrodynamic interactions show significant departures from those that include them in dilute networks. In dense networks, hydrodynamic screening reduces the strength of the interactions, and the predicted relaxation spectra coincide regardless of hydrodynamic model. We show that modes of energy dissipation in the network are fundamentally altered by the presence of long-ranged hydrodynamic interactions. Analogous to the Zimm model in polymer dynamics, models describing network viscoelasticity must incorporate these effects of hydrodynamic coupling across the network to accurately predict the experimental response.

000014694 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014694 653__ $$a

000014694 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014694 720__ $$aSwan, James
000014694 8560_ $$ffischerc@itam.cas.cz
000014694 8564_ $$s122607$$uhttps://invenio.itam.cas.cz/record/14694/files/TS.FM12-4.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1296, code TS.FM12-4.05
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000014694 962__ $$r13812
000014694 980__ $$aPAPER