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Rotational Stiffness (Torsional)
All physics tools
Calculate the torsional stiffness of a shaft or spring.
Parameters
Applied Torque (T) (N·m)
Twist Angle (θ)
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Stiffness
Enter torque and angle
About this calculator
Quick Reference
k
Stiffness
T
Torque
θ
Twist Angle (rad)
Overview
Rotational (or Torsional) Stiffness is the resistance of an object to being twisted by an applied torque.
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Pro Tips
k = T / θ
Units are typically N·m/rad.
A higher stiffness means it is harder to twist.
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Fun Facts
"Car anti-roll bars work by using torsional stiffness to resist body roll."
"The stiffness depends on the material (Shear Modulus) and the shape (Polar Moment of Inertia)."
Formula: k = T / θ
