Calcolatrice Modulo di Resistenza Gratuita

Calcola il modulo di resistenza elastico e plastico di una sezione.

mm
mm

Elastic Section Modulus Sxx

666,667 mm^3

Plastic Section Modulus Zxx1,000,000 mm^3
Shape Factor (Z/S)1.50

Elastic Section Modulus Sxx vs Width (b)

Vedi formula →

Formula

## Section Modulus of a Rectangle Section modulus links bending moment to bending stress directly. ### Elastic Section Modulus **S = b h^2 / 6** Derived from S = I / c where I = b h^3 / 12 and c = h / 2. ### Plastic Section Modulus **Z = b h^2 / 4** Z represents the full plastic capacity when the entire cross-section has yielded. The ratio Z/S is called the shape factor; for a rectangle it is always 1.5.

Esempio Risolto

A 100 mm x 200 mm rectangular section.

  1. 01Sxx = 100 x 200^2 / 6 = 100 x 40000 / 6 = 666,667 mm^3
  2. 02Zxx = 100 x 200^2 / 4 = 100 x 40000 / 4 = 1,000,000 mm^3
  3. 03Shape factor = 1,000,000 / 666,667 = 1.5