A light-scattering study of the nonlinear dynamics of electrorheological fluids in oscillatory shear
- Advanced Materials Physics Division, Sandia National Laboratories, Albuquerque, New Mexico 87185-1421 (United States)
We report a real time, two-dimensional light-scattering study of the nonlinear dynamics of field-induced structures in an electrorheological (ER) fluid subjected to oscillatory shear. We have developed a simple kinetic chain model of the observed dynamics by considering the response of a fragmenting/aggregating particle chain to the prevailing hydrodynamic and electrostatic forces. This theory of the dynamics is then used to describe the nonlinear rheology of ER fluids, and it is concluded that light scattering allows one to indirectly probe the stress in an ER fluid. {copyright} {ital 1995} {ital Society} {ital of} {ital Rheology}
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 115811
- Journal Information:
- Journal of Rheology, Journal Name: Journal of Rheology Journal Issue: 5 Vol. 39; ISSN JORHD2; ISSN 0148-6055
- Country of Publication:
- United States
- Language:
- English
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