A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b1 = 0.6 in, b2 = 1.8 in., and d = 1.2 in. The elastic modulus of the steel is E1 = 30,0000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the bronze is E2 = 15,000 ksi, and its allowable bending stress is 13 ksi. Calculate the magnitude of the allowable bending moment that can be applied about the z centroidal axis. y Bronze (2) d Steel (1) bị b2

Structural Analysis
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A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, = 0.6 in, b2 = 1.8 in.,
and d = 1.2 in. The elastic modulus of the steel is E1 = 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the
bronze is E2 = 15,000 ksi, and its allowable bending stress is 13 ksi. Calculate the magnitude of the allowable bending moment that can
be applied about the z centroidal axis.
Bronze (2)
d
Steel
(1)
b1
b2
Transcribed Image Text:A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, = 0.6 in, b2 = 1.8 in., and d = 1.2 in. The elastic modulus of the steel is E1 = 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the bronze is E2 = 15,000 ksi, and its allowable bending stress is 13 ksi. Calculate the magnitude of the allowable bending moment that can be applied about the z centroidal axis. Bronze (2) d Steel (1) b1 b2
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