Electromagnetic clutch - QuickField simulation example
Attraction force of an electromagnetic clutch versus rotor gap, for a clutch containing a solenoid, magnetic core, steel rotor, and nonmagnetic insert.
How to calculate the dependence of the attraction force on the distance between the rotor and the electromagnet?
Answer Typical applications Geometry
Given
Task
Solution
Result
Engineering question
Sweep the rotor-to-electromagnet gap with LabelMover and calculate the attraction force at each position, using an integration contour shifted into the air for accuracy.
electromagnetic clutches, solenoid-driven clutches, magnetic coupling devices
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Simulation problem
Problem Type
Axisymmetric problem of DC magnetics.
Ampere-turns in coil I = 750 A
Magnetic permeability = 2000.
Determine the dependence of the attraction force on the distance between the rotor and the electromagnet.
To accurately measure the force, the integration contour should be carried out at some distance from the interface between the media (ferromagnetic / air). To facilitate the construction of the integration contour, a "layer of air" block surrounding the steel rotor was added to the geometric model.
Rotor position change, problem solving and force measurement are automated using LabelMover tool. To automate the measurement of rotor position, a vertex "anchor" is added.
The force at the gap of 2 mm is 33 N:
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