A Novel Design Concept of a Magnetorheological Fluid-Based Damper Utilizing the Porous Medium for Implementation in Small-Scale Applications

Magnetorheological (MR) dampers have a virtue over conventional dampers, where their damping properties can be adjusted using magnetic field. However, MR been barely implemented in small vibratory systems, which the modal mass and stiffness are relatively small. This is due to two major reasons, namely its high parasitic force big moving mass. When such an damper installed system, system‘s default ratio increased therefore dynamic reduced. Here, new concept of utilizing porous medium shear operating mode together with external non-moving electromagnet proposed. combination results low For comparison purposes, benchmark comparable geometry constructed. The proposed possesses passive friction that 8× smaller OFF-state viscous 10–20× than damper. An investigation performance test system shows almost no reduction dynamic. Therefore, this configuration suitable for applications systems.