Shear modulus duct

The shear modulus or the modulus of rigidity quantifies how stiff a material is in shear, and it's the key material property in torsion via $k_{theta}=GJ/L$.

Symbol
$G_d$
Unit
GPa
Formulas
$\frac{E_d}{2\left(1+\nu_d\right)}$
Used in
$k_{\theta,d}$