Magnetorheological Fluid for Levitation Migration Technology

ABSTRACT

The dispersed particles of magnetorheological fluid form stable chain-like clusters under the magnetic field, and show an effect of controllable flowability and shape. Based on this characteristic, using migration magnetic acted on the magnetorheological fluid, the object directional migration can be realized, and then the magnetorheological fluid forms levitation at the same time, which has like fluctuation behavior. The principle of magnetorheological fluid levitation migration, the levitation magnetic circuit design, the magnetic field strength and the magnetic force were separately discussed in this paper. In this study, the finite element method was used to numerically simulate the influence wedge-like of magnetic force applied on the magnetic particles in magnetorheological fluid. The relationships were given between flux and air gap width, magnetic field intensity and air gap width, flux and air gap angle, magnetic field intensity and air gap angle. The magnetic force applied on the magnetic particles in magnetorheological fluid has been calculated with virtual work method and Maxwell stress tensor method. The magnetorheological fluid levitation height was determined by using the MSL micrometer and aerosol migration feasibility was confirmed experimentally.