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A rheological evaluation of steady shear magnetorheological flow behavior using three-parameter viscoplastic models

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dc.title A rheological evaluation of steady shear magnetorheological flow behavior using three-parameter viscoplastic models en
dc.contributor.author Cvek, Martin
dc.contributor.author Mrlík, Miroslav
dc.contributor.author Pavlínek, Vladimír
dc.relation.ispartof Journal of Rheology
dc.identifier.issn 0148-6055 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2016
utb.relation.volume 60
utb.relation.issue 4
dc.citation.spage 687
dc.citation.epage 694
dc.type article
dc.language.iso en
dc.publisher Society of Rheology
dc.publisher American Institute of Physics (AIP)
dc.identifier.doi 10.1122/1.4954249
dc.relation.uri http://scitation.aip.org/content/sor/journal/jor2/60/4/10.1122/1.4954249
dc.description.abstract Knowledge of the complicated flow characteristics of magnetorheological (MR) suspensions is necessary for simulations, calculations in engineering processes, or designing new devices utilizing these systems. In this study, we employed three constitutive equations (three-parameter models) for an evaluation of steady shear behavior of MR suspensions. The predictive/fitting capabilities of the Robertson-Stiff (R-S) model were compared with the commonly used Herschel-Bulkley (as a reference) and the Mizrahi-Berk models. The appropriateness of the models was examined using rheological data for diluted as well as concentrated MR systems. The effect of magnetic field strength on model fitting capabilities was also investigated. The suitability of the individual models was evaluated by observing correlation coefficient, sum of square errors, and root mean square errors. A statistical analysis demonstrated that the best fitting capabilities were exhibited by the R-S model, while others provided less accurate fits with the experimental data. Therefore, shear stresses and the yield stress predicted according to the R-S equation can be considered as the most accurate under defined conditions in comparison with the Herschel-Bulkley and the Mizrahi-Berk model predictions. We also showed that the consistency index obtained from the R-S model increased with increasing magnetic field and particle concentration, which physically reflected more rigid internal structures generated in MR suspensions upon an external magnetic field. This behavior was indistinguishable when other models were applied. © 2016 Author(s). en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1006525
utb.identifier.obdid 43875197
utb.identifier.scopus 2-s2.0-84976426559
utb.identifier.wok 000379585600013
utb.identifier.coden JORHD
utb.source j-wok
dc.date.accessioned 2016-08-09T14:02:53Z
dc.date.available 2016-08-09T14:02:53Z
dc.description.sponsorship Ministry of Education, Youth and Sports of the Czech Republic-Program NPU I [LO1504]
dc.rights Attribution 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Cvek, Martin
utb.contributor.internalauthor Mrlík, Miroslav
utb.contributor.internalauthor Pavlínek, Vladimír
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