| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sollich, Peter
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Topics
Publications (17/17 displayed)
- 2022Delayed elastic contributions to the viscoelastic response of foamscitations
- 2018On the existence of thermodynamically stable rigid solidscitations
- 2017Aging and linear response in the Hébraud–Lequeux model for amorphous rheologycitations
- 2015Non-affine fluctuations and the statistics of defect precursors in the planar honeycomb latticecitations
- 2012Unified study of glass and jamming rheology in soft particle systemscitations
- 2006Simulation estimates of cloud points of polydisperse fluids
- 2006Simulation estimates of cloud points of polydisperse fluidscitations
- 2006Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution
- 2005Effects of polymer polydispersity on the phase behaviour of colloid-polymer mixturescitations
- 2005Dynamic Heterogeneity in the Glauber-Ising chain
- 2005Liquid-vapour phase behaviour of a polydisperse Lennard-Jones fluidcitations
- 2005Effects of colloid polydispersity on the phase behavior of colloid-polymer mixturescitations
- 2003Fluctuation-dissipation relations in the nonequilibrium critical dynamics of Ising modelscitations
- 2003Equivalence of driven and aging fluctuation-dissipation relations in the trap modelcitations
- 2002Observable dependence of fluctuation-dissipation relations and effective temperaturescitations
- 2001Predicting phase equilibria in polydisperse systemscitations
- 2000Aging and rheology in soft materialscitations
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article
Aging and rheology in soft materials
Abstract
We study theoretically the role of aging in the rheology of soft materials. We define several generalized rheological response functions suited to aging samples tin which time translation se invariance is lost). These are then used to study aging effects within a simple scalar model (the "soft glassy theology" or SGR model) whose constitutive equations relate shear stress to shear strain among a set of elastic elements, with distributed yield thresholds, undergoing activated dynamics governed by a "noise temperature," x. (Between yields, each element follows affinely the applied shear.) For 1 <x <2 there is a power-law fluid regime in which transients occur, but no aging. For x <1, the model has a macroscopic yield stress. So long as this yield stress is not exceeded, aging occurs, with a sample's apparent relaxation time being of order its own age. The (age-dependent) linear viscoelastic loss modulus G "(w,t) rises as frequency is lowered, but falls with age t, so as to always remain less than G'(w,t) (which is nearly constant). Significant aging is also predicted for the stress overshoot in nonlinear shear startup and for the creep compliance. Though obviously oversimplified, the SGR model may provide a valuable paradigm for the experimental and theoretical study of rheological aging phenomena in soft solids. (C) 2000 The Society of Rheology. [S0148-6055(00)00102-4].