Calculator for Torsion springs
Diameter of spring wire d
10
-3
m
Mean coil diameter D
10
-3
m
Spring length r
10
-3
m
Number of active coils n
-
Modulus of elasticity E
10
9
Pa
Spring force F
N
Spring length Lc = n d
10
-3
m
Bending stress σ
10
6
Pa
Spring deflection dφ
deg
Spring deflection dφ
rad
Spring deflection df = r dφ
10
-3
m
Spring stiffness k = F / dφ
10
3
N/deg
Spring stiffness k = F / dφ
10
3
N/rad
Spring stiffness k = F / (r dφ)
10
3
N/m
Energy stored Ep = F r dφ / 2
J
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