
A new semi-active damping device based on smart-material control technology, using magnetorheological fluid as the working medium to adjust damping force in milliseconds.
Magnetorheological fluid flows with low viscosity without a magnetic field. When a magnetic field is applied, magnetic particles instantly form chain structures along the magnetic lines, rapidly changing the fluid resistance and damper force.


MRD can precisely suppress vibration response of buildings, bridges, and other structures under earthquakes, wind, and dynamic loads.