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Motor Mounting Base questions

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Message 1 of 2
Morcuse
361 Views, 1 Reply

Motor Mounting Base questions

Hello,

 

I'm currently designing a mounting base for a motor running at a constant speed of 1700 rpm for an undergraduate project.

 

I've already run a linear static stress simulation and a modal analysis. The first two natural frequencies resulted in about 143 Hz and 292 Hz.

 

However, I wonder how to tell at what frequency of vibration the motor base will be subject to, in order to guarantee a safe operation of the motor.

 

Can you help me with that?

 

Thank you,

Roberto

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Message 2 of 2
John_Holtz
in reply to: Morcuse

Hi Roberto,

 

The mounting base will vibrate due to resonance with the motor if the motor operates at 143 rev/sec (8580 RPM) or 292 rev/sec (17,520 RPM). (In other words, 1 Hz = 1 cycles/sec = 1 rev/sec.) Since the motor is operating at a much lower speed, there should not be a problem with resonance. Unless the motor or its load is severely unbalanced, I think that it is unlikely that the motor will cause any vibration problem.

 



John Holtz, P.E.

Global Product Support
Autodesk, Inc.


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