Intermittent dynamics in transient polymer networks under shear: signs of self-organized criticality.
Phys Rev E Stat Nonlin Soft Matter Phys
; 79(5 Pt 2): 056306, 2009 May.
Article
in En
| MEDLINE
| ID: mdl-19518561
ABSTRACT
In this paper we demonstrate an unusual behavior in the shear-banded flow of a viscoelastic fluid. We report large and patterned fluctuations in the shear stress in an apparently fluid material undergoing steady shear, which we interpret as an intermittent and microscopic fracture and self-healing process. The statistical pattern of the fluctuations is indicative of self-organized criticality, and their magnitude can be directly related to the constitutive instability that underlies the shear banding.
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Collection:
01-internacional
Database:
MEDLINE
Type of study:
Diagnostic_studies
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2009
Document type:
Article
Affiliation country: