Question

Find the maximum bendind stress for a rectangular beam, if the bending moment is 20 kNm and lxx = 405 x 10 mm. Ymax = 150 mm​

Answer 1

Step-by-step explanation:

bending stress eq

M/I =F/Y=E/R

M BENDING MOMENT

I MOMENT OF INERTIA

F BENDING STRESS

Y CENTROIDAL DISTANCE = D/2

E YOUNG'S MODULUS

R = RADIUS OF CURVATURE

F = M*Y /I

F = 20 *10⁶ *150 / 405*10

F = 740740.741 N/mm²

F=740.74 KN/mm²