Critical Speed of a Rotating Shaft - Dunkerley's method
In solid mechanics, in the field of rotordynamics, 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.
Dunkerley’s method is used in mechanical engineering to determine the critical speed of a shaft-rotor system.Related formulas
|N||critical speed(r.p.m.) (1/s)|
|E||young's modulus (pascal)|
|I||Second moment of area (m4)|
|m||mass of the shaft (kg)|
|L||length of the shaft between points (m)|