Polar Moment of Inertia in Longitudinal Shear Stress Formulas

The Polar Moment of Inertia is a shaft or beam’s resistance to being distorted by torsion, as a function of its shape. And is denoted by J. Polar Moment of Inertia is usually measured using the Millimeter⁴ for Second Moment of Area. Note that the value of Polar Moment of Inertia is always positive.

Formulas to find Polar Moment of Inertia in Longitudinal Shear Stress

fxPolar Moment of Inertia given Torsional Shear StressGo

List of variables in Longitudinal Shear Stress formulas

fx Torsional Moment Go

fx Radius of Shaft Go

fx Maximum Shear Stress Go

FAQ

What is the Polar Moment of Inertia?

The Polar Moment of Inertia is a shaft or beam’s resistance to being distorted by torsion, as a function of its shape. Polar Moment of Inertia is usually measured using the Millimeter⁴ for Second Moment of Area. Note that the value of Polar Moment of Inertia is always positive.

Can the Polar Moment of Inertia be negative?

No, the Polar Moment of Inertia, measured in Second Moment of Area cannot be negative.

What unit is used to measure Polar Moment of Inertia?

Polar Moment of Inertia is usually measured using the Millimeter⁴[mm⁴] for Second Moment of Area. Meter⁴[mm⁴], Centimeter⁴[mm⁴] are the few other units in which Polar Moment of Inertia can be measured.

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