Brian Dempster

Rotational Resonant Frequency

Discussion created by Brian Dempster on May 16, 2007
Latest reply on May 22, 2007 by Vince Adams
I need to predict the Rotational Resonant Frequency of a round diskmounted to a shaft.
Setup for Natural Resonant Frequency is straight forward and Idon't have any problems. I have tried fully restraining the shaftand restraining the disk in every direction except rotational.

The results are many times lower then I would expect. Am I settingup the model correctly, or is there a better way?