Study on the motion of single particle chain in the magnetorheological fluid under the action of traveling magnetic field

Magnetorheological fluid (MRF) is a widely used intelligent material that can quickly respond to external magnetic fields. To effectively control the motion of the particle chain inside the MRF, this paper combines the traveling magnetic field (TMF) with the MRF to study the movement of the single particle chain in the MRF under the action of the TMF for the first time and discusses the influence of the moving velocity of the TMF and the magnetic induction intensity on the motion displacement and the velocity of the single particle chain, determines the adjustable range of the single particle chain motion parameters, and builds an experimental platform to observe the motion of the single particle chain. The results show that under the action of the TMF, the single particle chain makes a variable velocity reciprocating motion, and the displacement amplitude of the single particle chain is inversely proportional to the moving velocity of the TMF but directly proportional to the magnetic induction intensity of the TMF. The single particle chain velocity amplitude is only proportional to the magnetic induction intensity and is unrelated to the moving velocity of the TMF. This study shows that adjusting the TMF parameters can effectively control the displacement and velocity of single particle chain motion. This study provides a compelling new method to control the motion pattern of single particle chains in MRF.