Performance Analysis of Magnetorheological Damper with Folded Resistance Gaps and Bending Magnetic Circuit

The traditional magnetorheological (MR) damper subject to the limited space has shortcomings such as small damping force, narrow dynamic range and low adaptability. In this study, a new MR with folded resistance gaps bending magnetic circuit was proposed for improving performance. length of gap increased by configuring multi-stage annular structure, established activate non-flux region. mathematical model analyze Subsequently, finite element analysis (FEA) methodology utilized investigate changes flux densities in gaps. test rig setup explore verify performance under different excitation conditions. results indicate maximum force is approximately 4346 N at current 1.5 A, frequency 0.25 Hz amplitude 7.5 mm. are enhanced 55.82% 62.21% compared that applied respectively, thus highlighting its high vibration control ability.