Related Resources: vibration
Angular Natural Frequency Shaft Two Masses Equations and Calculator
Machine Design and Engineering
Angular Natural Frequency of Shaft and Two Masses Equations and Calculator
Mass Spring Systems in Translation Equation and Calculator
ωn = [ ( kt ( I1 + I2 ) ) / ( I1I2 ) ] 1/2
Where:
kt = Torsional Stiffness of Shaft ( lb-in/rad )
I1, 2 = Rotary Mass Moment of Inertia ( lb-in-sec2 )
ωn = Angular Natural Frequency ( rad/sec )
Reference Harris, Shock and Vibration Handbook