Question

Calculate the buckling stress in MPa of rod BC (E-200 GPa) about the yay axis. If a 19 mm and b-32 mm. Komeadfed currection Party 2 decimal places a B 3 m b

Answer 1

Buckling stress in the beam =

2 Elmin L: σή Area

where

• E = Young's Modulus of material = 200 GPa = 200e3 MPa
• I(min) = Minimum Area Moment of Inertia =
  ಹಿತಿ 12 32 X 19² 12 18290.66 mm
  
  • b = 32 mm
  • a = 19 mm
• L(e) = Equivalent length = k x L = 0.5 x 5000 = 2500 mm
  • k = 0.5 (for fixed-fixed end)
  • L = 5 m = 5000 mm (using Pythagoras Theorem)
• Area = area of cross-section = 19 x 32 = 608 mm2

2 Elmin L: σή Area

​​​​​​​

Oь П° 200e3x18290.66 25002 608 ob = 9.501 MPa (Ans.)