An experimental evaluation of pre-yield and post-yield rheological models of magnetic field dependent smart materials

摘要: The rheological behavior of field-dependent smart fluids in both the pre-yield and post-yield regimes is investigated. Typical viscoelastic viscoplastic models are employed to model behavior. Viscoelastic used widely regime. Viscoplastic also extensively regimes. Two including a ferromagnetic nanoparticle fluid an MR examined here. Using MCR300 rheometer, properties oscillation rotational mode measured. In mode, storage loss moduli versus frequency shear stress, rate, viscosity torque domain, nano-particle modeled by Kelvin-Voigt solid model. Also, three-parameter fluid. Bingham-plastic Herschel-Bulkley selected time domain. Which more appropriate depends on external magnetic field rate. Both here fluids’ properly predict results observed experiments.