Start-up rheometry of highly polydisperse magnetorheological fluids: experiments and simulationsRuiz-López, J. A., Wang, Z. W., Fernández-Toledano, J. C., Hidalgo-Alvarez, R. and de Vicente, J. (2016) Start-up rheometry of highly polydisperse magnetorheological fluids: experiments and simulations. Rheologica Acta, 55 (3). pp. 245-256. ISSN 1435-1528
It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1007/s00397-016-0914-y Abstract/SummaryAn extensive experimental and simulation study is carried out in conventional magnetorheological fluids formulated by dispersion of mixtures of carbonyl iron particles having different sizes in Newtonian carriers. Apparent yield stress data are reported for a wide range of polydispersity indexes (PDI) from PDI = 1.63 to PDI = 3.31, which for a log-normal distribution corresponds to the standard deviation ranging from to . These results demonstrate that the effect of polydispersity is negligible in this range in spite of exhibiting very different microstructures. Experimental data in the magnetic saturation regime are in quantitative good agreement with particle-level simulations under the assumption of dipolar magnetostatic forces. The insensitivity of the yield stresses to the polydispersity can be understood from the interplay between the particle cluster size distribution and the packing density of particles inside the clusters.
Download Statistics DownloadsDownloads per month over past year Altmetric Deposit Details University Staff: Request a correction | Centaur Editors: Update this record |
Lists
Lists
