Cableizer ®

Moment of inertia (bending) metallic screen

Symbol
$J_{sc}$
Unit
mm$^4$
Formulas
$n_{scw} \frac{\pi {t_{sc}}^4}{64}+\frac{\pi {t_{sc}}^2}{4} \frac{n_{scw} \left(\frac{D_{sc}}{2}\right)^2}{2}$round wires
$\frac{n_{scw}}{2} \left(\frac{t_{sc} {w_{sc}}^3}{12}+\frac{w_{sc} {t_{sc}}^3}{12}\right)+\frac{n_{scw}}{2} t_{sc} w_{sc} {D_{sc}}^2$flat wires
$\frac{\pi}{64} \left({D_{sc}}^4-{D_i}^4\right)$tape screen
Related
$D_i$
Diameter over insulation incl. insulation screen [mm]
$D_{sc}$
Diameter over screen [mm]
$n_{scw}$
Number of wires screen
$\pi$
Archimedes' constant $\pi$
$t_{sc}$
Thickness screen [mm]
$w_{sc}$
Width flat screen wires [mm]
Used in
$J_{tot}$
Moment of inertia (bending) cable [mm$^4$]
$JE_c$
Flexural stiffness cable [kN.mm$^2$]