Chemical Physics Letters, Vol.722, 74-79, 2019
Three-dimensional simulation study on the aggregation behavior and shear properties of magnetorheological fluid
In this article, the aggregation behavior and shear properties of magnetorheological fluid (MRF) under different magnetic field strengths, volume fraction of magnetic particles (MPs) and shear rates were investigated by coarse-grained molecular dynamics simulations. With the formation of a wall-like structure, the shear stress (tau) of the MRF increased linearly in the shear strains region 0 < strain (gamma) < 0.58. In the yield region (gamma > 0.58), the stress began to decrease and finally tended to be stable. The relationship between the aggregation of MPs and shear stress under a magnetic field-shear field was determined at the microscopic level.