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FEA - Electromagnetic analysis for an
automotive power clutch:
Axis-IT&T did FEA - Electromagnetic analysis for magnetic
flux distribution in an automotive power clutch.
The current coil was subjected to a DC voltage of 12 volts. Axis-IT&T
was given the task to analyze the electro magnetic clutch parts
for magnetic flux density distribution, for given resistance of
coils of 3.7ohms and 4.1ohms and potential difference of 12V
The electromagnetic clutch had a shaft assembly with load connected
to the armature through a pulley or gear. Until the coil was energized,
the armature assembly was not coupled and thus did not rotate
with the input rotor shaft. As the coil became energized, the
rotor shaft assembly became a part of the electromagnet attracting
the armature plate and engaging it with the rotor assembly and
thus driving the load. On being de-energized it de-coupled.
Inputs from client:
CASE 1
- Applied voltage: 12V
- Resistance of the coil: 3.7 Ohms
- Applied loads
- Applied Current Density
Flux density in the metallic regions was noted, after the current
was passed through the current coil
The above graph was obtained, when current of 3.1 ampere DC was
passed. The Y-axis represents the magnetic field (Wb/m2), while
the X-axis represents the no. of poles.
Inputs from client:
CASE 2
- Applied voltage: 12V
- Resistance of the coil: 4.1 Ohms
- Applied loads
- Applied Current Density
Results:
- Analysis was generated in 2 test cases, as shown above
- Flux distribution in both the cases was similar
- Due to contraction of the air gap the flux distribution improved
at pole 1, which was not the case with the previous analysis
that was conducted
Technologies Used:
Electromagnetic module of ANSYS mechanical was used to complete
the analysis.
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