×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

maximum frequency of a rotor fan

maximum frequency of a rotor fan

maximum frequency of a rotor fan

(OP)
User's group

I m working on a centrifugal fan wheel and I'm studing the natural
frequency of the rotor. This rotor has a shaft with two bearing at the
ends. All the pieces are steel. The first shape is at 19Hz.
What is your opinion about the maximum velocity to avoid resonance
problem?

Thank you
Filippo Garuti
Italy

RE: maximum frequency of a rotor fan

+/- 20% is a good "rule of thumb".  + 20% and you have to know what will happen during start-up where you drive through the frequency.  -20% would be better...Approximately 15 Hz (900 RPM).

Garland E. Borowski, PE

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources