Critical speed rotor calculation

[Mr_Curious]

Good day engineers.
I am looking for a procedure of rotor critical speed calculation.
Could you advise me some useful books or a links?

Thanks in advance!

 

[electricpete]

It's a broad subject. Not to be impolite, but I'd suggest start with google. If you end up with questions or more specific request for links/references, post on forum384 which will be more tuned in to that subject.

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(2B)+(2B)' ?

 

[Maheshpowerplant]

Hi..Critical speed depends on the mass of rotor, distance between two supports & rotor diameter.

Critical speed =4.76x106xD2xF /(KL2)

D = Diameter of shaft in inch
F = select 1 for motors (both side free supports)
L = Distance between two supports in inch
K = Safety factor take 1.2 to 1.5

Critical speed directly relate with machine vibrations.

For information may refer

https://www.powerplantandcalculations.com/2020/06/why-do-vibrations-occur-in-machines.html