Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
670894 | Journal of Non-Newtonian Fluid Mechanics | 2011 | 9 Pages |
Abstract
⺠High stress/strain rate squeezing flow behavior of a concentrated colloidal suspension is evaluated via Hopkinson bar methodology. ⺠Results provide insight into the transitional and post-transitional behavior of these discontinuously thickening materials under compressive loading. ⺠A phenomenological model describing the overall material response is achieved via surface fitting Ï-ε-ÎµË plots of experimental results. ⺠Analysis of the model reveals that, after an initial period of viscous deformation, the suspension behavior is viscoelastic. ⺠At high stresses, the suspension exhibits purely viscous behavior, consistent with current elastohydrodynamic models.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Amanda S. Lim, Sergey L. Lopatnikov, Norman J. Wagner, John W. Jr.,