What is meant by critical speed of a shaft which are the factors affecting it?
In solid mechanics, in the field of rotor-dynamics, the critical speed is the theoretical angular velocity that excites the natural frequency of a rotating object, such as a shaft, propeller, leadscrew, or gear. The factor which affects the critical speed of a shaft is diameter of the disc, span of the shaft, and eccentricity.
How to Calculate Critical or Whirling Speed in R.P.S?
Critical or Whirling Speed in R.P.S calculator uses Critical or Whirling Speed = 0.4985/sqrt(Static Deflection of Shaft) to calculate the Critical or Whirling Speed, The Critical or Whirling speed in r.p.s formula is defined as the speed at which unwanted vibration happens when shaft is rotating. Critical or Whirling Speed is denoted by ωc symbol.
How to calculate Critical or Whirling Speed in R.P.S using this online calculator? To use this online calculator for Critical or Whirling Speed in R.P.S, enter Static Deflection of Shaft (δ) and hit the calculate button. Here is how the Critical or Whirling Speed in R.P.S calculation can be explained with given input values -> 19.40409 = 0.4985/sqrt(0.00066).