Calculator for round hollow torsion bars
Bar outer diameter D	10-3 m
Bar inner diameter d	10-3 m
Bar Length L	10-3 m
Shear modulus G = E / ( 2 ( 1+v ) )	109 Pa
Torque T	Nm
Polar moment of inertia Ip	10-12 m4
Section modulus S = Ip / e	10-9 m3
Shear stress τ	106 Pa
Deflection φ	rad
Deflection φ	deg
Torsional stiffness k = dT / dφ	Nm/rad
Torsional stiffness k = dT / dφ	Nm/deg
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