Damping Performance Analysis of Magnetorheological Damper Based on Multiphysics Coupling

Magnetorheological (MR) damper performance is evaluated only by single-field analysis in the design process, which can easily lead to larger errors. Based on this, a simulation method of MR considering multiphysics coupling was proposed. According certain automobile shock absorber requirement, an suitable for suspension designed. The mechanical model, electromagnetic field flow and structural stress model were deduced established. To investigate damping more accurately, established COMSOL software, field, also carried out. static magnetic characteristics, dynamic distribution, proposed under action obtained. results show that force 1134.6 N, adjustable coefficient 9.1 at applied current 1.4 A. A test system analyze damper, compared with experimental results. simulated have same change rule. Moreover, increases current, different external excitations little effect force. output appropriate has wide range. illustrate 1200.0 10.1 when error between experiment 5.5% 9.9%, respectively.