Stress Overshoots in Simple Yield Stress Fluids
| Autor: | Mauro Sbragaglia, Federico Toschi, Sébastien Manneville, Roberto Benzi, Catherine Barentin, Thibaut Divoux |
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| Přispěvatelé: | Dipartimento di Fisica [Roma], Università degli Studi di Roma Tor Vergata [Roma], Laboratoire de Physique de l'ENS Lyon (Phys-ENS), École normale supérieure de Lyon (ENS de Lyon)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Liquides et interfaces (L&I), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Department of Applied Physics [Eindhoven], Eindhoven University of Technology [Eindhoven] (TU/e), École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Computational Multiscale Transport Phenomena (Toschi), Fluids and Flows |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Nucleation FOS: Physical sciences General Physics and Astronomy Thermodynamics 02 engineering and technology Condensed Matter - Soft Condensed Matter 01 natural sciences Power law Stress (mechanics) Physics::Fluid Dynamics [SPI]Engineering Sciences [physics] Rheology 0103 physical sciences [CHIM]Chemical Sciences Continuum (set theory) 010306 general physics ComputingMilieux_MISCELLANEOUS [PHYS]Physics [physics] Condensed Matter - Materials Science Settore FIS/02 Fluid Dynamics (physics.flu-dyn) Materials Science (cond-mat.mtrl-sci) Physics - Fluid Dynamics 021001 nanoscience & nanotechnology Shear rate Shear (sheet metal) Condensed Matter::Soft Condensed Matter Soft Condensed Matter (cond-mat.soft) 0210 nano-technology |
| Zdroj: | Physical Review Letters Physical Review Letters, 2021, 127 (14), pp.148003. ⟨10.1103/PhysRevLett.127.148003⟩ Physical Review Letters, American Physical Society, 2021, 127 (14), pp.148003. ⟨10.1103/PhysRevLett.127.148003⟩ Physical Review Letters, 127(14):148003. American Physical Society |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/PhysRevLett.127.148003 |
| Popis: | Soft glassy materials such as mayonnaise, wet clays, or dense microgels display under external shear a solid-to-liquid transition. Such a shear-induced transition is often associated with a non-monotonic stress response, in the form of a stress maximum referred to as "stress overshoot". This ubiquitous phenomenon is characterized by the coordinates of the maximum in terms of stress $\sigma_\text{M}$ and strain $\gamma_\text{M}$ that both increase as weak power laws of the applied shear rate. Here we rationalize such power-law scalings using a continuum model that predicts two different regimes in the limit of low and high applied shear rates. The corresponding exponents are directly linked to the steady-state rheology and are both associated with the nucleation and growth dynamics of a fluidized region. Our work offers a consistent framework for predicting the transient response of soft glassy materials upon start-up of shear from the local flow behavior to the global rheological observables. Comment: 5 pages, 4 figures, supplemental materials with 2 figures |
| Databáze: | OpenAIRE |
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