Semiactive dynamic model of the rail track-vehicle system to reduce the vertical contact force interaction using magnetorheological dampers

In the current research, a semiactive suspension system is presented as a railway vehicle to investigate the rail track-vehicle interaction using magnetorheological dampers. For this purpose, a dynamic model of a railway vehicle is introduced, based on the integrated magnetorheological dampers, to reduce the vertical interaction of the rail track and the vehicle system. The model includes a railway vehicle with 10 degrees of freedom and the track with six coupled subsystems via the nonlinear Hertz contact mechanism. To verify the proposed model, a test data which is reported in the literature is used, and then the rail track-vehicle interaction of the semiactive system is compared with the passive system. The results show that the semiactive system could significantly reduce the interaction.