Experimental and Numerical Study on Magnetorheological Fluids Based on Mixing Coated Magnetic Particles

摘要: AbstractMagnetorheological (MR) fluid is a kind of typical smart material whose stability, viscosity, and shear yield stress are three important performance indexes. In this study, in order to acquire high MR fluid, two kinds coated magnetic particles, multiwalled carbon nanotubes– (MWCNTs-) particles surfactant-modified prepared their performances, such as density properties, investigated. A group fluids based on mixing with different ratios volume fractions, dosages thixotropic agent experimented considering sedimentation rheological stress. The results show that the have lower relatively saturation magnetization, which will benefit antisettlement behavior fluids; ratio fractio...