INVESTIGADORES
BERLI Claudio Luis Alberto
artículos
Título:
A structural viscosity model for magnetorheology
Autor/es:
CLAUDIO L. A. BERLI; JUAN DE VICENTE
Revista:
APPLIED PHYSICS LETTERS
Editorial:
AMER INST PHYSICS
Referencias:
Lugar: New York; Año: 2012 vol. 101 p. 21903 - 21907
ISSN:
0003-6951
Resumen:
A structural viscosity model is proposed, which describes the shear viscosity from the balance between build up (magnetic field-induced clustering) and breakdown (shear-induced breakup) of particle aggregates. The model accounts for typical deviations from Bingham model predictions that are extensively reported in the MR literature. More precisely, the model (i) provides a physical ground for the observed Casson-like shear flow behaviour, (ii) predicts the existence of a low shear plateau in weak MR fluids, and (iii) asymptotically recovers the typical Bingham-like behavior that is observed in (strong) conventional MR fluids at experimentally accessible times.
