Polar Moment of Inertia of Shaft in Torsional Vibrations Formulas

Polar Moment of Inertia of Shaft is the resistance of a shaft to torsional deformation, depending on the shaft’s geometry and mass distribution. And is denoted by J_s. Polar Moment of Inertia of Shaft is usually measured using the Meter⁴ for Second Moment of Area. Note that the value of Polar Moment of Inertia of Shaft is always negative.

Torsional Vibrations formulas that make use of Polar Moment of Inertia of Shaft

fxModulus of Rigidity of Shaft for Free Torsional Vibration of Single Rotor SystemGo

fxNatural Frequency of Free Torsional Vibration of Single Rotor SystemGo

FAQ

What is the Polar Moment of Inertia of Shaft?

Polar Moment of Inertia of Shaft is the resistance of a shaft to torsional deformation, depending on the shaft’s geometry and mass distribution. Polar Moment of Inertia of Shaft is usually measured using the Meter⁴ for Second Moment of Area. Note that the value of Polar Moment of Inertia of Shaft is always negative.

Can the Polar Moment of Inertia of Shaft be negative?

Yes, the Polar Moment of Inertia of Shaft, measured in Second Moment of Area can be negative.

What unit is used to measure Polar Moment of Inertia of Shaft?

Polar Moment of Inertia of Shaft is usually measured using the Meter⁴[m⁴] for Second Moment of Area. Centimeter⁴[m⁴], Millimeter⁴[m⁴] are the few other units in which Polar Moment of Inertia of Shaft can be measured.

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