Calcolatrice Sollecitazione Trave Gratuita

Calcola la sollecitazione di flessione di una trave.

kN-m
mm
cm^4

Maximum Bending Stress

89.76 MPa

Maximum Bending Stress vs Bending Moment (M)

Vedi formula →

Formula

## Bending Stress in Beams The flexure formula relates the internal bending moment to the normal stress at any fibre of the cross-section. ### Formula **sigma = M c / I** M is the bending moment, c is the perpendicular distance from the neutral axis to the outermost fibre, and I is the second moment of area about the neutral axis. The result is the peak tensile or compressive stress at the extreme fibre.

Esempio Risolto

A steel beam with I = 8356 cm^4, depth 300 mm (c = 150 mm), under a moment of 50 kN-m.

  1. 01Convert moment: 50 kN-m = 50 x 10^6 N-mm
  2. 02Convert inertia: 8356 cm^4 = 8356 x 10^4 mm^4 = 8.356 x 10^7 mm^4
  3. 03sigma = (50 x 10^6 x 150) / (8.356 x 10^7)
  4. 04sigma = 7.5 x 10^9 / 8.356 x 10^7 = 89.76 MPa