Cableizer ®

Moment of inertia (bending) duct

Symbol
$J_{d}$
Unit
mm$^4$
Formulas
$\frac{\pi}{64} \left({Do_{d}}^4-{Di_{d}}^4\right)$
Related
$Di_{d}$
Inner diameter duct [mm]
$Do_{d}$
Outer diameter duct [mm]
$\pi$
Archimedes' constant $\pi$
Used in
$JE_{d}$
Flexural stiffness duct [kN.mm$^2$]
$k_{\theta,d}$
Torsional spring constant duct [N.mm/rad]