Multiphysics Modeling of Magnetorheological Dampers

D. Case, B. Taheri, and E. Richer
Southern Methodist University
Dallas, TX

A magnetorheological fluid consists of a suspension of microscopic magnetizable particles in a non-magnetic carrier medium. When a magnetic field is produced in the same space, the microscopic particles suspended in the fluid become oriented and form chains along the magnetic flux lines, changing the fluid’s rheology.

This project uses COMSOL Multiphysics to examine the magnetic flux lines and field intensity generated within a custom magnetorheological damper and applies these results to modeling of the dynamic non-Newtonian fluid flow. Modifications to the damper geometry are explored to improve performance while minimizing power draw of the electromagnet.