What was the old school way to determine natural frequency?
What was the old school way to determine natural frequency?
(OP)
Of a crankshaft? Especially in torsion.
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
What was the old school way to determine natural frequency?
|
RE: What was the old school way to determine natural frequency?
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: What was the old school way to determine natural frequency?
http://www.freestudy.co.uk/dynamics/holzer.pdf
RE: What was the old school way to determine natural frequency?
RE: What was the old school way to determine natural frequency?
RE: What was the old school way to determine natural frequency?
Also, what is your application that you need to know the Fn of the crankshaft?
Tobalcane
"If you avoid failure, you also avoid success."
"Luck is where preparation meets opportunity"
RE: What was the old school way to determine natural frequency?
There are methods to measure torsional vibration on a rotating shaft, such as with a rotary encoder and analysis software.
RE: What was the old school way to determine natural frequency?
On a running engine we used to use a toothed wheel, and inductive pickup, and a valve 'powered' FM demodulator. Plus ca change, still in use.
For a physical test in the lab as you say belt it with a hammer.
Analytical - Holzer.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: What was the old school way to determine natural frequency?
RE: What was the old school way to determine natural frequency?
- Steve
RE: What was the old school way to determine natural frequency?
Tobalcane
"If you avoid failure, you also avoid success."
"Luck is where preparation meets opportunity"
RE: What was the old school way to determine natural frequency?
If you want to know how it was done during WW2 then you need to buy Practical Solution of Torsional Vibration by Kerr Wilson.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?