TY - GEN
T1 - A simple shear analysis of MR fluids
AU - Jonsdottir, F.
AU - Gudmundsson, K. H.
AU - Hreinsson, E.
AU - Thorsteinsson, F.
AU - Gutfleisch, O.
PY - 2011
Y1 - 2011
N2 - The performance of most commercial MR fluid devices depends on the shear strength of the MR fluid. The field-induced yield stress can be accurately characterized experimentally by a magneto-rheometer. However, as a number of factors, for example, particle volume ratio and particle size, are known to affect the rheological properties of the fluid, such measurements can be very time consuming. Hence, computational models represent a valuable tool in the design of MR fluid devices. This study provides a computational model to quantitatively predict the shear yield stress for MR fluids. The configuration is a representative unit cell in the form of a cube of a visco-plastic material which contains a number of rigid spherical particles. The cube undergoes a simple shear deformation and the mean induced shear stress is calculated. The model is used to study the effect of particle size and volume ratio on the dynamic yield stress of MR fluids.
AB - The performance of most commercial MR fluid devices depends on the shear strength of the MR fluid. The field-induced yield stress can be accurately characterized experimentally by a magneto-rheometer. However, as a number of factors, for example, particle volume ratio and particle size, are known to affect the rheological properties of the fluid, such measurements can be very time consuming. Hence, computational models represent a valuable tool in the design of MR fluid devices. This study provides a computational model to quantitatively predict the shear yield stress for MR fluids. The configuration is a representative unit cell in the form of a cube of a visco-plastic material which contains a number of rigid spherical particles. The cube undergoes a simple shear deformation and the mean induced shear stress is calculated. The model is used to study the effect of particle size and volume ratio on the dynamic yield stress of MR fluids.
UR - http://www.scopus.com/inward/record.url?scp=84865624035&partnerID=8YFLogxK
U2 - 10.1142/9789814340236_0069
DO - 10.1142/9789814340236_0069
M3 - Conference contribution
AN - SCOPUS:84865624035
SN - 9814340227
SN - 9789814340229
T3 - Electro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference
SP - 499
EP - 505
BT - Electro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference
PB - World Scientific Publishing Co. Pte Ltd
T2 - 12th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2010
Y2 - 16 August 2010 through 20 August 2010
ER -