Question

Consider a composite beam of the cross-sectional dimensions shown in the following figure. The upper 150 by 250 mm part is wood ($E_w$ = 10GPa); the lower 10 by 150 mm strap is steel ($E_{st}$ = 200GPa). If this beam is subjected to a bending moment of 30 kN.m around a horizontal axis, what are a) the maximum stress in steel (25 points) b) the maximum stress in wood (25 points) Beam under pure bending M = 30 kN.m Cross-section of the beam 150 mm 250 mm 10 mm wood steel

          Consider a composite beam of the cross-sectional dimensions shown in the following figure. The upper 150 by 250 mm part is wood ($E_w$ = 10GPa); the lower 10 by 150 mm strap is steel ($E_{st}$ = 200GPa). If this beam is subjected to a bending moment of 30 kN.m around a horizontal axis, what are
a) the maximum stress in steel (25 points)
b) the maximum stress in wood (25 points)

Beam under pure bending
M = 30 kN.m

Cross-section of the beam
150 mm
250 mm
10 mm
wood
steel

Consider a composite beam of the cross-sectional dimensions shown in the following figure. The upper 150 by 250 mm part is wood (Ew = 10GPa); the lower 10 by 150 mm strap is steel (Est = 200GPa). If this beam is subjected to a bending moment of 30 kN.m around a horizontal axis, what are
a) the maximum stress in steel (25 points)
b) the maximum stress in wood (25 points)

Beam under pure bending
M = 30 kN.m

Cross-section of the beam
150 mm
250 mm
10 mm
wood
steel

Added by Alexander J.

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