07-08-2012, 04:20 PM
Magnetorheological Fluids
Magnetorheological.ppt (Size: 315 KB / Downloads: 117)
Functions of MR Fluids
These are liquids that change their properties when we apply a magnetic field to them.
When the magnet is in place the MR Fluid turns into solid.
When the magnet is removed the solid instantly reverts to liquid
What is MR fluid?
Soft magnetic material in a carrier oil.
Silicon oil or even corn syrup is mixed with the MRF to prevent rust.
Typical MR fluid contains 20-40% by volume of relatively pure, soft iron particles.
Rheology or to the phenomena of flowing matter
Is type of rheological fluids whose yield stress can be varied by an applied magnetic field.
A typical MR fluid consists of micron sized magnetizable iron/ferrous particles suspended in a base fluid like silicone oil or water.
Applications of MR Fluid
Vehicle Suspension Dampers
The MR damper has a built-in MR valve across which the MR fluid is forced. The piston of the MR damper acts as an electromagnet with the required number of coils to produce the appropriate magnetic field. Also the MR damper has a run-through shaft to avoid an accumulator.
Advantages Of MR Fluid
Easy to control
As magnetic fields can be precisely controlled by current driven electromagnets
Have higher magnitude of yield stress
Compared to ER fluids the simple construction of devices, low power requirements for control, fast response
Magnetorheological.ppt (Size: 315 KB / Downloads: 117)
Functions of MR Fluids
These are liquids that change their properties when we apply a magnetic field to them.
When the magnet is in place the MR Fluid turns into solid.
When the magnet is removed the solid instantly reverts to liquid
What is MR fluid?
Soft magnetic material in a carrier oil.
Silicon oil or even corn syrup is mixed with the MRF to prevent rust.
Typical MR fluid contains 20-40% by volume of relatively pure, soft iron particles.
Rheology or to the phenomena of flowing matter
Is type of rheological fluids whose yield stress can be varied by an applied magnetic field.
A typical MR fluid consists of micron sized magnetizable iron/ferrous particles suspended in a base fluid like silicone oil or water.
Applications of MR Fluid
Vehicle Suspension Dampers
The MR damper has a built-in MR valve across which the MR fluid is forced. The piston of the MR damper acts as an electromagnet with the required number of coils to produce the appropriate magnetic field. Also the MR damper has a run-through shaft to avoid an accumulator.
Advantages Of MR Fluid
Easy to control
As magnetic fields can be precisely controlled by current driven electromagnets
Have higher magnitude of yield stress
Compared to ER fluids the simple construction of devices, low power requirements for control, fast response