Unsteady extension of quasi-steady physical modeling and experimental verification of a magnetorheological energy absorber

Magnetorheological (MR) fluids are promising in controllable damping based on regulated apparent viscosity under magnetic field control, and they employed various devices such as automotive dampers energy absorbers for artillery or landing gears by medium substitution with structural adaptations. In this study, we designed fabricated a magnetorheological absorber (MREA) disc springs recoiling parts, modeled the MR fluid flow Bingham constitutive model, then carried out unsteady extension quasi-steady model. The experimental tests of MREA show that model can designate behaviors different impact speeds better than original; thus, controllability is verified. An interesting phenomenon, where rippled peak force observed at saturated excitation when speed not so high disappears enough, accounted from viewpoint modeling finally verified more results.